types of lighting, most notably their high operating temperature and the risks of explosion from their pressurized bulb. The halogen bulb can reach temperatures over 200 °C, increasing the risk of fire should anything flammable come in contact or even be in close proximity to the bulb or fixture. The quartz capsule containing the filament and halogen gas is pressurized and can explode if improperly handled or damaged, and must be handled carefully prior to installation to prevent contamination with oil and salt from fingerprints, which can dramatically shorten the lamp's life. ANSI designations The following ANSI standard codes are used to designate certain power and beam angle combinations for MR16 lamps. Many manufacturers use these standard codes for lamps matching these specifications: Note that MR lamps are available in many other power and beam combinations than those available above. For this reason, MR lamps are also often labeled according to beam spread abbreviations. Note that these while these abbreviations are commonly used, the angles associated with these abbreviations vary slightly from manufacturer to manufacturer. Typical beam angles for these beam spread abbreviations are as follows: See also Bayonet mount Bi-pin connector Edison screw Luminous flux References External links MR16 Q&A from Lighting Research Center Types of lamp