Title of Invention: PROTECTIVE HOUSING STRUCTURE Abstract: A protective housing structure for a heating, ventilation, and air conditioning (HVAC) system comprises a first end and a second end with a centerline extending there between. The protecting housing structure includes a cover section that is located between the first end and second end. The cover section comprises a dome-shaped top panel that is rigidly attached to a first sidewall and a second sidewall. Detailed Description: CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a divisional of U.S. patent application Ser. No. 14/680,799 filed on Apr. 7, 2015 by Hanks, et al., entitled “Protective Housing Structure”, which claims priority under 35 U.S.C. 119(e) to U.S. Provisional Patent Application No. 61/976,331 filed on Apr. 7, 2014 by Hanks, et al., and entitled “Protective Housing Structure,” all of which are hereby incorporated by reference in their entirety. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT Not applicable. REFERENCE TO A MICROFICHE APPENDIX Not applicable. BACKGROUND Heating, ventilation, and/or air conditioning (HVAC) systems may generally be used in residential and/or commercial areas for heating and/or cooling to create comfortable temperatures inside those areas. HVAC systems may generally be capable of cooling a comfort zone by operating in a cooling mode for transferring heat from a comfort zone to an ambient zone using a refrigeration cycle, and in some cases the HVAC system may be capable of reversing the direction of refrigerant flow through the components of the HVAC system so that heat is transferred from the ambient zone to the comfort zone, thereby heating the comfort zone. To manage the flow of air between the comfort zone and ambient zone, some HVAC systems may have an air handler component that operates in the regulation, circulation, and conditioning of air. SUMMARY In an embodiment, a protective housing structure for an HVAC system is disclosed. The protective housing structure includes a first end and second end with a centerline extending there between. The protective housing may also comprise a cover section located between the first and second ends. The cover section may comprise a dome-shaped top panel that is rigidly attached to a first sidewall and a second sidewall. An embodiment of an HVAC system is disclosed that comprises a double-walled cabinet and a shroud. The double-walled cabinet has an at least one exterior wall and an interior wall. The at least one exterior wall and the interior wall are configured to form a wall cavity that is at least partially bound by each of the exterior wall and the interior wall. The shroud comprises a plurality of walls that are rigidly attached to a dome-shaped cover having a planar surface at or near an apex of the dome-shaped cover. The shroud may be at least partially within the wall cavity and may be attached to an exterior wall or an interior wall of the double-walled cabinet. An alternative HVAC system is disclosed that may comprise a cabinet, a sealable enclosure, a control component, and an insulation material. The cabinet may have at least one wall comprising an interior shell and an exteriors skin associated with the interior shell that is configured to form a wall space that is at least partially bound by each of the interior shell and the exterior skin; the at least one wall being so configured as to at least partially defined a fluid duct of the cabinet. At least a portion of the sealable enclosure may be rigidly attached with the inner shell of the cabinet. The control component may be at least partially disposed within the wall space and the sealable enclosure. Additionally, the insulation is disposed within the wall space and is configured to prevent airflow through at least part of the wall space. An additional embodiment discloses a method for protecting components of a HVAC system. The method comprises rigidly attaching a shroud to an interior wall of a double-walled cabinet. The double-walled cabinet may have at least one exterior wall and an interior wall. The at least one exterior wall and the interior wall may be disposed in such a way as to form a wall cavity that is at least partially bound by each of the exterior wall and the interior wall. The shroud may be a unitary skin structure comprising a plurality of walls and a dome-shaped top cover. The dome-shaped top cover may include a planar surface at or near an apex of the dome-shaped top cover. The shroud may be located within the wall cavity of the double-walled cabinet, and the shroud is configured to define an opening between the plurality of walls and beneath the dome-shaped top cover, the opening being configured to receive a control component. The method may also comprise resisting a compressive force using the shroud. BRIEF DESCRIPTION OF THE DRAWINGS For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description: FIG. 1 is a schematic diagram of an exemplary HVAC system according to a disclosed embodiment; FIG. 2A is an orthogonal view of an embodiment of a protective housing structure; FIG. 2B is an alternative orthogonal view similar to FIG. 2A; FIG. 2C is top view of an exemplary protective housing structure similar to FIG. 2A; FIG. 2D is a side view of the protective housing structure of FIG. 2C; FIG. 2E is a cross-sectional view taken along line V-V of FIG. 2C; FIG. 2F is a cross-sectional view taken along line W-W of FIG. 2C; FIG. 2G is a cross-sectional view taken along line P-P of FIG. 2C; FIG. 2H is a rotated cutaway side of FIG. 2D showing a cross-sectional view along line R-R of FIG. 2I; FIG. 2I is a bottom view of the exemplary protective housing of FIG. 2C; FIG. 2J is a plurality of rotated cross-sectional views taken along lines X-X, Y-Y, and Z-Z of FIG. 2I; FIG. 2K is a cross-sectional view of details C and D along cross section Z-Z of FIG. 2J; FIG. 2L is a cross-sectional view taken along line U-U of FIG. 2D; FIG. 2M is an orthogonal view similar to FIG. 2A; FIG. 2N is an alternative orthogonal view similar to FIG. 2B; FIG. 2O is an alternative cross-sectional view taken along line U-U of FIG. 2D; FIG. 2P is a top view of the protective housing structure located at cross-section U-U of FIG. 2O; FIG. 2Q is an orthogonal view of an alternative embodiment similar to the protective housing structure of FIG. 2O; FIG. 2R is an orthogonal view of an alternative embodiment similar to the protective housing structure of FIG. 2O; FIG. 3A is an oblique side view of another embodiment of a control assembly; FIG. 3B is an alternate oblique side view of the control assembly of FIG. 3A; FIG. 3C is an oblique side view of an embodiment of a control assembly; FIG. 3D is an oblique side view of yet another embodiment of a control assembly; FIG. 4A is an oblique view of an exemplary protective housing cover similar to FIG. 2A; FIG. 4B is an alternate oblique view of the protective cover of FIG. 4A; FIG. 5A is an oblique view of an exemplary air handling unit according to embodiments of the disclosure; FIG. 5B is an orthogonal view of the air handling unit of FIG. 5A in an assembled configuration; and FIG. 5C is a partially exploded oblique view of the air handling unit of FIG. 5A; DETAILED DESCRIPTION In the drawings and description that follow, like parts are typically marked throughout the specification and drawings with the same reference numerals, respectively. In addition, similar reference numerals may refer to similar components in different embodiments disclosed herein. The drawing figures are not necessarily to scale. Certain features of the invention may be shown exaggerated in scale or in somewhat schematic form and some details of conventional elements may not be shown in the interest of clarity and conciseness. The present invention is susceptible to embodiments of different forms. Specific embodiments are described in detail and are shown in the drawings, with the understanding that the present disclosure is not intended to limit the invention to the embodiments illustrated and described herein. It is to be fully recognized that the different teachings of the embodiments discussed herein may be employed separately or in any suitable combination to produce desired results. In the modern market place of HVAC systems, clients expect systems to perform as intended and prefer to minimize down-time when a component of the HVAC system requires maintenance. Mitigating and/or preventing failures yields higher customer satisfaction and faster device maintenance, thereby increasing profit margins. Because HVAC systems increasingly use electrical components (e.g., a circuit board and/or other control device mounted on a control panel), the sensitive nature of some of these components makes them susceptible to degraded performance when they are exposed to temperature gradients, changes in humidity, air contaminates, environmental factors, and in some cases, may lead to premature failure in response to exposures and/or application of applied forces. Thus, mitigating and/or preventing failures from external exposures and/or applied forces during and/or after construction and installation may allow for more reliable operation of the overall HVAC system and quicker maintenance of internal components. Thus, the present disclosure teaches a protective housing structure—and system and method for implementation—that protects components of an HVAC system from exposure to negative environmental elements. Specifically, the protective housing structure may maintain its structural integrity upon the application of a predetermined amount of externally applied force (e.g. loads from an injected expanding foam insulation material) such that the force does not collapse or deform the protective housing structure and damage sensitive components disposed therein. Structural failure and inadequate protection from environmental elements can lead to increased cost for replacing parts or in some situations, replacing an entire unit of the HVAC system because the failure may not be repairable. However, protecting internal components should be balanced with allowing the surrounding environment to perform its intended function—such as injected expanding foam providing a generally continuous thermal conductive barrier without substantial voids or gaps in insulating material. In an embodiment, a protective housing structure comprises a plurality of side walls and a dome-shaped top panel that may have a planar surface at or near the panel's apex. The protective housing structure may be configured so as to allow the placement of proximate objects (e.g., surrounding insulation material) without causing voids or irregularities in the proximate object's placement. For example, the dome-shaped top panel may allow for injection of expanding foam from one side of the protective housing structure and the protective housing structure does not impede the expanding foam from filling an area proximate to the protective housing structure. The protective housing structure may include a sealing section with a channel that is open at one end that is configured to allow expanding foam to exit the channel and surround an area proximate to the protective housing structure that is opposite from where expanding foam was injected. Furthermore, the planar surface of the dome-shaped top panel may be configured to distribute forces from insulation material away from the top panel. In some embodiments, the dome-shaped top panel may be configured to be a monocoque structure, that is a structure that supports most and/or all applied loads through the outer skin, similar to an egg shell. This allows applied forces to be distributed towards edge portions of the protective housing structure, which may flex and/or materially deflect a predefined distance and/or angle so as to form a seal between the protective housing structure and an adjacent wall or proximate surface. The protective housing structure may be manufactured as one unitary piece, such as through injection molding, thereby minimizing individual parts that may increase the cost of production. A unitary structure may also ensure that the protective housing structure forms a seal with a proximate surface (e.g., a walls of cabinet in an HVAC system), thus sealing the protective housing structure's inner surfaces and components (e.g. control panel) from the external environment. Turning now to FIG. 1, a simplified schematic diagram of an exemplary HVAC system 100 is shown according to an embodiment of the disclosure. In this embodiment, HVAC system 100 may comprise an indoor unit 102, an outdoor unit 104, and a system controller 106. In some embodiments, the HVAC system 100 may also comprise a generator and a generator fluid circuit that is contained within the outdoor unit 104. The system controller 106 may control operation of the indoor unit 102 and/or the outdoor unit 104. As shown, the HVAC system 100 may also be known as a heat pump system that may be selectively operated to implement one or more substantially closed thermodynamic refrigeration cycles to provide a cooling functionality and/or a heating functionality. It is understood that a double-walled cabinet design (as disclosed hereafter) may be incorporated in any of the indoor unit 102, outdoor unit 104, or other generally known housing units of an HVAC system, such as an air handling unit (AHU) 100 as disclosed in FIGS. 5A-5C. In an embodiment, indoor unit 102 may comprise an indoor heat exchanger 108, an indoor fan 110, and an indoor metering device 112. Some embodiments of indoor unit 102 may include a double walled cabinet, such as the air handling unit (AHU) 100 as disclosed in FIGS. 5A-5C. Indoor heat exchanger 108 may include a plate fin heat exchanger configured to allow heat exchange between refrigerant carried within internal tubing of the indoor heat exchanger 108 and fluids that contact the indoor heat exchanger 108 but that are kept segregated from the refrigerant. In other embodiments, indoor heat exchanger 108 may comprise a spine fin heat exchanger, a microchannel heat exchanger, or any other suitable type of heat exchanger. In some embodiments, indoor unit 102 may include a protective housing structure, enclosure, and/or shroud 146 that may be configured to define an opening that may at least partially encapsulate a control assembly 148. The protective housing structure 146 may include embodiments disclosed in at least FIGS. 2A-2R, and may separate insulation material, contaminants, fluids, for example, from the opening defined by the protective structure. Additionally, control assembly 148 may include HVAC control components or electrical boards, such as indoor fan controller 144 and/or indoor controller 124, or embodiments as disclosed in FIGS. 3A-3D. In an embodiment, the indoor fan 110 is a centrifugal blower comprising a blower housing, a blower impeller at least partially disposed within the blower housing, and a blower motor configured to selectively rotate the blower impeller. In other embodiments, the indoor fan 110 may comprise a mixed-flow fan and/or any other suitable type of fan. The indoor fan 110 may be configured as a modulating and/or variable speed fan capable of being operated at many speeds over one or more ranges of speeds. In other embodiments, the indoor fan 110 may be configured as a multiple speed fan capable of being operated at a plurality of operating speeds by selectively electrically powering different ones of multiple electromagnetic windings of a motor of the indoor fan 110. In yet other embodiments, the indoor fan 110 may be a single speed fan. In an embodiment, the indoor metering device 112 is an electronically controlled motor driven electronic expansion valve (EEV). In alternative embodiments, the indoor metering device 112 may comprise a thermostatic expansion valve, a capillary tube assembly, and/or any other suitable metering device. The indoor metering device 112 may comprise and/or be associated with a refrigerant check valve and/or refrigerant bypass for use when a direction of refrigerant flow through the indoor metering device 112 is such that the indoor metering device 112 is not intended to meter or otherwise substantially restrict flow of the refrigerant through the indoor metering device 112. In an embodiment, outdoor unit 104 comprises an outdoor heat exchanger 114, a compressor 116, an outdoor fan 118, an outdoor metering device 120, and a reversing valve 122. Outdoor heat exchanger 114 is a spine fin heat exchanger configured to allow heat exchange between refrigerant carried within internal passages of the outdoor heat exchanger 114 and fluids that contact the outdoor heat exchanger 114 but that are kept segregated from the refrigerant. In other embodiments, outdoor heat exchanger 114 may comprise a plate fin heat exchanger, a microchannel heat exchanger, or any other suitable type of heat exchanger. In an embodiment, the compressor 116 is a multiple speed scroll type compressor configured to selectively pump refrigerant at a plurality of mass flow rates. In alternative embodiments, the compressor 116 may comprise a modulating compressor capable of operation over one or more speed ranges, a reciprocating type compressor, a single speed compressor, and/or any other suitable refrigerant compressor and/or refrigerant pump. In an embodiment, the outdoor fan 118 is an axial fan comprising a fan blade assembly and fan motor configured to selectively rotate the fan blade assembly. In other embodiments, the outdoor fan 118 may comprise a mixed-flow fan, a centrifugal blower, and/or any other suitable type of fan and/or blower. The outdoor fan 118 may be configured as a modulating and/or variable speed fan capable of being operated at many speeds over one or more ranges of speeds. In other embodiments, the outdoor fan 118 may be configured as a multiple speed fan capable of being operated at a plurality of operating speeds by selectively electrically powering different ones of multiple electromagnetic windings of a motor of the outdoor fan 118. In yet other embodiments, the outdoor fan 118 may be a single speed fan. In an embodiment, the outdoor metering device 120 is a thermostatic expansion valve. In alternative embodiments, the outdoor metering device 120 may comprise an electronically controlled motor driven EEV similar to indoor metering device 112, a capillary tube assembly, and/or any other suitable metering device. The outdoor metering device 120 may comprise and/or be associated with a refrigerant check valve and/or refrigerant bypass for use when a direction of refrigerant flow through the outdoor metering device 120 is such that the outdoor metering device 120 is not intended to meter or otherwise substantially restrict flow of the refrigerant through the outdoor metering device 120. In an embodiment, the reversing valve 122 is a so-called four-way reversing valve. The reversing valve 122 may be selectively controlled to alter a flow path of refrigerant in the HVAC system 100 as described in greater detail below. The reversing valve 122 may comprise an electrical solenoid or other device configured to selectively move a component of the reversing valve 122 between operational positions. In an embodiment, the system controller 106 may comprise a touchscreen interface for displaying information and for receiving user inputs, which may be accomplished by the use of an application stored in a non-transitory memory and executed on a processor. The system controller 106 may display information related to the operation of the HVAC system 100 and may receive user inputs related to operation of the HVAC system 100. However, the system controller 106 may further be operable to display information and receive user inputs tangentially and/or unrelated to operation of the HVAC system 100. In some embodiments, the system controller 106 may not comprise a display and may derive all information from inputs, remote sensors, and remote configuration tools. In some embodiments, the system controller 106 may comprise a temperature sensor and may further be configured to control heating and/or cooling of zones associated with the HVAC system 100. In some embodiments, the system controller 106 may be configured as a thermostat for controlling supply of conditioned air to zones associated with the HVAC system 100. In some embodiments, the system controller 106 may also selectively communicate with an indoor controller 124 of the indoor unit 102, with an outdoor controller 126 of the outdoor unit 104, and/or with other components of the HVAC system 100. The system controller 106 may be configured for selective bidirectional communication over a communication bus 128. Portions of the communication bus 128 may comprise a three-wire connection suitable for communicating messages between the system controller 106 and one or more of the HVAC system 100 components configured for interfacing with the communication bus 128. Still further, the system controller 106 may be configured to selectively communicate with HVAC system 100 components and/or any other device 130 via a communication network 132. In some embodiments, the communication network 132 comprises a telephone network, and the other device 130 may comprise a communication device (e.g., a landline or mobile telephone). The communication network 132 may comprise a public and/or private network (e.g., the Internet), and the other device 130 may comprise a communication device and/or mobile communication device, either of which may include capabilities for network communication (e.g., a smartphone capable of connection to the internet or another mobile device). Some embodiments of the communication network 132 may also comprise a remote server, including a processor and a non-transitory memory. In an embodiment, the indoor controller 124 may be carried, housed, enclosed, and/or protected by the indoor unit 102 and may be configured to receive information inputs, transmit information outputs, and otherwise communicate with the system controller 106, the outdoor controller 126, and/or any other device 130 via the communication bus 128 and/or any other suitable medium of communication. Exemplary embodiments of an indoor controller 124 may include embodiments disclosed in FIGS. 3A-3D as explained above. In some embodiments, the indoor controller 124 may be configured to communicate with an indoor personality module 134 that may comprise information related to the identification and/or operation of the indoor unit 102. The indoor controller 124 may be configured to receive information related to a speed of the indoor fan 110, transmit a control output to an electric heat relay, transmit information regarding an indoor fan 110 volumetric flow-rate, communicate with and/or otherwise affect control over an air cleaner 136, and communicate with an indoor EEV controller 138. In some embodiments, the indoor controller 124 may be configured to communicate with an indoor fan controller 142 and/or otherwise affect control over operation of the indoor fan 110. The indoor personality module 134 may comprise information related to the identification and/or operation of the indoor unit 102 and/or a position of the outdoor metering device 120. In some embodiments, the indoor EEV controller 138 may be configured to receive information regarding temperatures and/or pressures of the refrigerant in the indoor unit 102. More specifically, the indoor EEV controller 138 may be configured to receive information regarding temperatures and pressures of refrigerant entering, exiting, and/or within the indoor heat exchanger 108. Further, the indoor EEV controller 138 may be configured to communicate with the indoor metering device 112 and/or otherwise affect control over the indoor metering device 112. The indoor EEV controller 138 may also be configured to communicate with the outdoor metering device 120 and/or otherwise affect control over the outdoor metering device 120. In an embodiment, the outdoor controller 126 may be carried, housed, enclosed, and/or protected by the outdoor unit 104 and may be configured to receive information inputs, transmit information outputs, and otherwise communicate with the system controller 106, the indoor controller 124, and/or any other device via the communication bus 128 and/or any other suitable medium of communication. In some embodiments, the outdoor controller 126 may be configured to communicate with an outdoor personality module 140 that may comprise information related to the identification and/or operation of the outdoor unit 104. In some embodiments, the outdoor controller 126 may be configured to receive information related to an ambient temperature associated with the outdoor unit 104, information related to a temperature of the outdoor heat exchanger 114, and/or information related to refrigerant temperatures and/or pressures of refrigerant entering, exiting, and/or within the outdoor heat exchanger 114 and/or the compressor 116. The outdoor controller 126 may also be configured to transmit information related to monitoring, communicating with, and/or otherwise affecting control over the outdoor fan 118, a compressor sump heater, a solenoid of the reversing valve 122, a relay associated with adjusting and/or monitoring a refrigerant charge of the HVAC system 100, a position of the indoor metering device 112, and/or a position of the outdoor metering device 120. The outdoor controller 126 may further be configured to communicate with a compressor drive controller 144 that is configured to electrically power and/or control the compressor 116. The HVAC system 100 is shown configured for operating in a mode for cooling (i.e., colloquially known as a cooling mode) in which heat is absorbed by refrigerant at the indoor heat exchanger 108 and heat is rejected from the refrigerant at the outdoor heat exchanger 114. In some embodiments, the compressor 116 may be operated to compress refrigerant and pump the relatively high temperature and high pressure compressed refrigerant from the compressor 116 to the outdoor heat exchanger 114 through the reversing valve 122 and to the outdoor heat exchanger 114. As the refrigerant is passed through the outdoor heat exchanger 114, the outdoor fan 118 may be operated to move fluid (e.g., air) into contact with the outdoor heat exchanger 114, thereby transferring heat from the refrigerant to the fluid (e.g., air) surrounding the outdoor heat exchanger 114. The refrigerant may primarily comprise liquid phase refrigerant and the refrigerant may flow from the outdoor heat exchanger 114 to the indoor metering device 112 through and/or around the outdoor metering device 120 which does not substantially impede flow of the refrigerant in the cooling mode. The indoor metering device 112 may meter passage of the refrigerant through the indoor metering device 112 so that the refrigerant downstream of the indoor metering device 112 is at a lower pressure than the refrigerant upstream of the indoor metering device 112. The pressure differential across the indoor metering device 112 allows the refrigerant downstream of the indoor metering device 112 to expand and/or at least partially convert to a two-phase (vapor and gas) mixture. The two phase refrigerant may enter the indoor heat exchanger 108. As the refrigerant is passed through the indoor heat exchanger 108, the indoor fan 110 may be operated to move fluid (e.g., air) into contact with the indoor heat exchanger 108, thereby transferring heat to the refrigerant from the fluid (e.g., air) surrounding the indoor heat exchanger 108, and causing evaporation of the liquid portion of the two phase mixture. The refrigerant may thereafter re-enter the compressor 116 after passing through the reversing valve 122. In some embodiments, the HVAC system 100 may operate in a mode for heating (i.e., a heating mode). In this embodiment, the reversing valve 122 may be controlled to alter the flow path of the refrigerant, the indoor metering device 112 may be disabled and/or bypassed, and the outdoor metering device 120 may be enabled. In the heating mode, refrigerant may flow from the compressor 116 to the indoor heat exchanger 108 through the reversing valve 122, the refrigerant may be substantially unaffected by the indoor metering device 112, the refrigerant may experience a pressure differential across the outdoor metering device 120, the refrigerant may pass through the outdoor heat exchanger 114, and the refrigerant may reenter the compressor 116 after passing through the reversing valve 122. Most generally, operation of the HVAC system 100 in the heating mode reverses the roles of the indoor heat exchanger 108 and the outdoor heat exchanger 114 as compared to their operation in the cooling mode as described in the present disclosure. Portions of the embodied HVAC system 100 and/or components therein, may comprise insulation material that acts as a thermal barrier to minimize heat transfer between designated areas. For example, an insulation material may be disposed within a wall space or other cavity of an HVAC system component such that the insulation material at least partially encapsulates an outer surface, such as any of a protective housing structure, shroud, or sealable enclosure as discussed in FIGS. 2A-2R. The insulation material may prevent fluid flow (such as air flow) through at least part of a component, such as a cavity or wall space of a cabinet, because the insulation material may at least partially fill the wall cavity or space. It is understood that insulation material may comprise a variety of forms and shapes. In an embodiment, insulation material may include expanding foam insulation that may comprise any of open cell foam insulation or closed cell foam insulation. Some insulation may comprise polyurethane, which may take the form of a spray foam. In some embodiments, a method of insulating an HVAC system 100 may include inserting and/or injecting insulation material. Where the insulation comprises an expanding foam, the insulation material may expand at a designated volumetric rate, and may apply a force when coming in at least partial contact with and/or encapsulate a component of the HVAC system 100, such as a protective housing structure, shroud, and/or sealable enclosure as disclosed in FIGS. 2A-2R. In some embodiments, the insulation material may be configured to resist adhesion to materials (and/or components comprising materials) that are polar in nature. Turning now to FIGS. 2A-2R, a variety of orthogonal, side, top, and cross-sectional views of an embodiment of a protective housing structure 200 for a component of an HVAC system, such as 100, are disclosed. In some embodiments, an HVAC system, such as 100, may comprise a protective housing structure 200, that may also be referred to as a shroud. Certain embodiments may alternatively refer to a protective housing structure 200 as a sealable enclosure that includes at least a portion of the enclosure integrally formed and/or attached and/or rigidly attached (non-removable) and/or connected with a wall and/or side of a component of an HVAC system—such as a cabinet of an Air Handling Unit as disclosed in FIGS. 5A-5C. In the disclosed embodiment, protective housing structure 200 comprises a first end 202 and second end 204 with a centerline 206 extending there between. Generally, terms such as distal and proximal are used to refer to spatial/geometrical orientation with respect to the first end 202 and second end 204, with specific use of the term proximal indicating any of facing, and/or being oriented closer to, and/or being relationally closer in proximity to the first end 202, and similarly distal with the second end 204. In some embodiments, a surface, structure, and/or component reference may be disposed and/or located at or near the second end 204 of the protective housing structure 200; however, may still reference a proximal orientation, thus referring to the direction and/or projecting orientation of the surface/structure/component towards the first end 202. The protective housing structure 200 may also comprise a cover section 208 that is located between the first end 202 and second end 204, where the cover section 208 may include a first side wall 212, second side wall 214, third side wall 250, and dome-shaped top panel 210, where the dome-shaped top panel 210 may be rigidly connected to a side wall 212, 214, 250. In an embodiment, the first side wall 212 and second side wall 214 may be substantially identical and/or approximately mirrored about centerline 206. Each first 212 and second side wall 214 may comprise a respective proximal end 216, 217, distal end 218, 219, top portion 220, 221, bottom portion 222, 223, inner surface 224, 225, outer surface 226, 227, and lip portion 228, 229. The inner surface 224, 225 of each respective first 212 and second side wall 214 may face and extend along the centerline 206 between the first 202 and second end 204. The illustrated embodiment shown in FIG. 2K discloses the bottom portion 222, 223 of each first 212 and second 214 side wall having a lip portion 228, 229 that extends approximately orthogonal from the outer surface 226, 227 while also extending along the length of each side wall 212, 214 so as to define a gap 228a, 229a with the outer surface of each side wall 212, 214. In some embodiments, such as FIG. 2G, the third side wall 250 may also include a lip portion 255 and gap 255a that is substantially similar and/or the same as that of each gap 228a, 229a and/or lip portion 228, 229 along the respective side wall 212, 214. In an embodiment, the gap 228a, 229a may be configured such that each side wall 212, 214 forms a channel with the lip portion 228, 229 and lip portion 228, 229 may include a protruding portion that runs in a parallel and/or about parallel direction to each side wall 212, 214 and in some embodiments may be within a five degree tolerance from parallel. In some embodiments, a lip portion, such as 228, 229, may be configured to be a continuous piece of material and/or configuration that extends around at least some and/or all of the protective housing structure 200. In the embodiment illustrated in FIGS. 2C, 2F, and 2H, the first 212 and second 214 side walls have a plurality of alternating ribs 260 protruding in a direction substantially orthogonal to the inner surface 224, 225 of each side wall 212, 214 and towards the centerline 206 of the protective housing structure 200. Each of the plurality of alternating ribs 260 extends along the length of the inner surface 224, 225 of each side wall 212, 214—that is, beginning towards the first end 202 with each of the subsequent alternating ribs 260 disposed closer to the second end 204. In the illustrated embodiment, each of the plurality of alternating ribs 260 on the inner surface 225 of the second side wall 214 is so disposed and/or configured as to substantially mirror the disposition and/or configuration of the plurality of alternating ribs 260 on the inner surface 224 of the first side wall 212. As illustrated, the plurality of alternating ribs 260 on each of the side walls 212, 214 comprises individual protruding ribs, with most being approximately similar in height (as shown in at least FIGS. 2C and 2L, the distance as measured in relation to the top portion 220, 221, and bottom portion 222, 223 of each respective side wall 212, 214), width (as shown in at least FIGS. 2C and 2L, the distance as measured in relation from the inner surface 224, 225 of each respective side wall 212, 214 towards the centerline 206), and length (as shown in at least FIGS. 2C and 2L, the distance that may be measured in relation along the centerline 206 from the first end 202 towards the second end 204, and/or in relation along the inner surface 224, 225 of each respective side wall 212, 214). The alternating ribs 260 are described as alternating due to the configured disposition of each of the individual ribs along each respective side wall 212, 214; that is, in an embodiment, every other rib of the plurality of alternating ribs 260 is disposed at a predefined distance as measured from the bottom portion 222, 223 of each respective side wall 212, 214, and that predefined distance may be the same for every other rib. FIG. 2F is a cross-sectional view taken along line W-W of FIG. 2C. As illustrated in at least one of FIGS. 2C and 2F, the alternating ribs 260 may be configured such that a rib closest to the second end 204 on each of the respective side walls 212, 214 has a vertical stop portion that protrudes transverse to each of the respective walls and transverse to the rib portion extending in the direction along the centerline 206 from the first end 202 to the second end 204. The vertical stop portion of a rib of the plurality of alternating ribs 260 may be configured and/or adapted to stop a control panel 280 (as show in FIG. 2Q) from sliding (and/or being disposed along centerline 206) any further between the plurality of alternating ribs 260 into the opening, such as opening 296 as shown in FIG. 2M, defined by the protective housing structure 200. More plainly, in an embodiment, a collective plurality of alternating ribs 260 may comprise a top row (relationally closer to the top portions 220, 221) of individual ribs and bottom row (relationally closer to the bottom portions 222, 223) of individual ribs, wherein the top row is disposed at a distance from the bottom portions 222, 223 of each respective side wall 212, 214 that is different than the bottom row's disposition (distance from the bottom portions 222, 223 of each respective side wall 212, 214). As shown in at least FIGS. 2C, 2F, and 2L, the differing distances of the top row and bottom row from the bottom portions 222, 223 may be configured so as to form a gap and/or channel between the top and bottom row as measured between the top portion 220, 221, and bottom portion 222,223 of each respective side wall 212, 214, which can be seen in FIGS. 2C, 2F, and 2L. The disposition of the alternating ribs 260 may in a configuration so as to operatively engage with a control panel plate 280, with alternative embodiments shown in at least FIGS. 3A-3D. Specifically, in an embodiment shown in FIGS. 2C and 2Q, at least two ribs of the plurality of ribs 260 of each side wall 212, 214 are disposed in a configuration that secures a control panel plate along centerline 206 by frictional force. As illustrated in at least FIGS. 2C and 2Q, the first peripheral edge 282 and second peripheral edge 284 of control panel 280 may operatively engage with the alternating ribs 260 such that the control panel 280—when placed between each for the side walls 212, 214 and beneath the dome-shaped top panel 210 such that the distal end 286 of the control panel 280 is oriented towards the second end 204—is between the top row and bottom row of alternating ribs 260 and is held in place by frictional force. The control panel 280 (which may include a control component as disclosed in embodiments of FIGS. 3A-3D) may be at least partially disposed within the protective housing structure 200 (which may be a sealable enclosure) and/or within a cavity/wall space of a component of an HVAC system. In some embodiments, the plurality of alternating ribs 260 may be manufactured from the same material as each of the side walls 212, 214 and/or be molded, cast, formed, or created as one structure with each of the side walls 212, 214. In the embodiment illustrated in at least FIGS. 2C and 2F, each of the side walls 212, 214 may comprise a stopping rib 262. The stopping rib 262 may be a protrusion from a side wall 212, 214 and configured such that the stopping rib is transverse to the side wall 212, 214. In some embodiments, a stopping rib 262 on a side all 212, 214 may be connected with one of the ribs of the plurality of alternating ribs 260 of a side wall 212, 214. A stopping rib 262 may be configured transverse to at least one alternating rib such that the stopping rib 262 prevents placement and/or operative engagement of a panel, such as control panel 280, along a path of the center 260 that is below the plurality of alternating ribs 260 and above the bottom portion 222, 223 of each respective side wall 212, 214. The cover section 208 may also comprise the dome-shaped top panel 210 that may be rigidly attached to the first side wall 212 and second side wall 214. In the embodiment illustrated in FIGS. 2A-2R, the dome-shaped top panel 210 has an inner surface 230, an outer surface 232, and an apex 234. Some embodiments may refer to the dome-shaped top panel 210 as a dome-shaped top cover. In an embodiment, the outer surface 232 of the dome-shaped top panel 210 has a planar surface 236 located at or near the apex 234 of the dome-shaped top panel 210. The planar surface 236 of the dome-shaped top cover 210 may be configured to be complementary and/or parallel and/or about parallel with an adjacent surface and/or structure, such as a wall of an HVAC component (e.g., a wall of a double-walled cabinet). In some embodiments, the planar surface 236 may be configured in such a way as to distribute an applied force via the outer surface 232. Further elaboration regarding the protective housing structure's 200 distribution of an applied force is disclosed below. The planar surface 236 at or near the apex 234 may be configured such that injection and/or expansion of insulating material that passes over the dome-shaped top structure 210 will cover and/or encompass a surrounding area proximate to the dome-shaped top structure 210—that is, the configuration and planar surface 236 is such that it does not create and/or allow a void of insulating material to form in an area proximate to the dome-shaped top structure 210. While the dome-shaped top panel 210 may not be in the exact shape of a dome because of at least the planar surface 236, the dome-shaped top panel 210 may be such that the outer surface 232 curves away from the apex 234 towards an edge portion 238 of the dome-shaped top panel 210, and/or the inner surface 230 may have a concave curve 231 with respect to facing the centerline 206. For example, the dome-shaped top panel 210 may include at least a partial hemi-ellipsoidal curvature and/or at least a portion curving away from the apex 234 that resembles a hemi-ellipsoidal curvature. It is understood that, in some embodiments, the dome-shaped top panel 210 may have a variable and/or constant radius of curvature in at least a portion of the structure. In an embodiment, the dome-shaped top panel 210 is configured as to resist material deformation in at least in a direction orthogonal to the planar surface 236 located at or near the apex 234. As illustrated in an embodiment, the edge portion 238 may comprise the area where the dome-shaped top panel 210 and at least one side wall (such as 212, 214, 250) meet and/or come together. In an embodiment, at least some of the edge portion 238 of the dome-shaped top panel 210 is rigidly coupled to the top portion 220, 221, 252 of any of the side walls 212, 214 and/or 250. The side walls, such as any of a first 212, second 214, and/or third 250 side wall, may be so configured as to vertically support the dome-shaped top panel 210 at a predefined distance from the bottom portion 222, 223, 254 of each of the respective side walls 212, 214, 250. In an embodiment, the plurality of side walls 212, 214, 250 may be configured to be about equal in height at the edge portion 238, particularly the corners where the side walls meet—that is where the dome-shaped top panel 210 transitions to sidewall 212 and 250, along with the dome-shaped top panel 210 transitioning to sidewall 214 and 250. More plainly, the protective housing structure 200 is configured such that the height at the corners where each of the side walls 212, 214, 250 meet the dome-shaped top panel 210 is about uniform. The first 212 and second 214 side walls may be configured in such a way that each of the first side wall 212 and is set apart a predetermined distance from each other, as illustrated in the disclosed embodiment of at least FIG. 2C. As mentioned, the cover section 208 may include a third side wall 250. A third side wall 250 may comprise a proximal end 251, a distal end 253, a top portion 252, a bottom portion 254, an inner surface 256, and an outer surface 258. In an embodiment, the third side 250 wall is rigidly coupled with each of the edge portion 238 of the dome-shaped top panel 210, the first side wall 212, and the second side wall 214. As disclosed in at least FIGS. 2D and 2G, the third side wall 250 is adjacent to the distal end 218, 219 of each side wall 212, 214 and transverse to centerline 206 and may not be orthogonal relative to the centerline 206 as measured from the bottom portion 254 to top portion 252. The third side wall 250 may be disposed such that that the outer surfaces 226, 227 of each of the first 212 and second 214 side walls and the outer surface 232 of the dome-shaped top panel 210 are sealed from their respective inner surface 224, 225, 230, as shown in FIGS. 2C and 2L. In some embodiments, the third side wall 250 is configured in such a way that the control panel plate 280 is not prohibited from operatively engaging with at least two ribs of the plurality of alternating ribs 260 of each first 212 and second 214 sidewall. The disclosed embodiments illustrate at least one hole and/or opening 290 in the third sidewall 250; specifically, the third side wall 250 may be configured as to define at least one opening 290 between the proximal end 251 and the distal end 253. The at least one opening 290 defined by the third side wall 250 may be adapted to receive a plug 292 along a central axis 294 of the at least one opening 290, as illustrated in FIGS. 2P, 2Q, and 2R. In some embodiments, a plug 292 may be referred to as a grommet with a seal, where the plug 292 is molded into the protective housing structure 200 during manufacture and/or have a molded groove such that the plug 292 and/or grommet can be placed in the groove. The plug 292 may be disposed in such a way as to at least substantially cover and/or create a barrier around the at least one opening 290, and in some embodiments may form a seal between the proximal end 251 and distal end 253 of the third side wall 250. A purpose of forming a seal may be to keep external environmental materials (e.g., expanding foam) from entering the inner cavity of the protective housing structure 200, thereby protecting components (e.g., electrical control panels) that may be likely to experience problems from various levels of environmental exposure. In some embodiments, a seal and/or plug 292 may be described as airtight and/or watertight; however, it is understood that an in some embodiments, a perfect airtight and/or watertight seal and/or plug 292 is not necessary and a substantial airtight and/or watertight seal and/or plug 292 may be sufficient. The third side wall 250 may also include a lip portion 255 that is configured to define a gap 255a as illustrated in FIG. 2G and/or substantially as the previously described lip portions 228, 229 and respective gaps 228a, 229a. In an embodiment, a plug 292 may be disposed in at least a portion of gap 255a, and/or lip portion 255 may be configured such that gap 255a at least partially retains plug 292 so as to restrict movement along the central axis 294 of the at least one opening 294. It is understood that plug 292 may be configured such that objects (e.g. wires and/or cabling) may extend through the plug 292 along the plug axis 294 while maintaining a seal between the inner and outer surfaces of the protective housing structure 200. In an embodiment, the lip portion 255 and gap 255a may surround the perimeter of a defined at least one opening 290. It is understood that in some embodiments, each of a plurality of openings 290 in the third sidewall 250 may include the same general configuration, but have varying dimensions, such as illustrated in FIGS. 2A and 2O. A protective housing structure 200 for an HVAC system may also comprise a first sealing section 240 that includes a proximal side 241 that faces the first end 202 of the protective housing structure 200 along centerline 206. The first sealing section 240 may be located adjacent to the cover section 208 and between the first 202 and second 204 ends. In a disclosed embodiment, the first sealing section 240 has a first transverse member 242 extending transverse to the centerline 206. The first sealing section may be rigidly coupled with any of the cover section 208 and disclosed above, and in some embodiments, the first sealing section 240 may be one continuous and/or unitary structure and/or piece of material with the cover section 208, where the protective structure 200 was manufactured out of continuous piece of material. In an embodiment of the protective housing structure 200, the first transverse member 242 has an upper surface 244 that is an outer surface, where the upper surface 244 is a planar surface that may be disposed and/or configured approximately parallel to and/or complementary with the planar surface 236 of the dome-shaped top panel's 210 outer surface 232. The upper surface 244 may be located approximately at the same elevation (measured as vertical height, such as from centerline 206 to the
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