<https://aerovexsystems.com/product/dust-plus-replacement-filters/#product>
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"By replacing the current filter in your HVAC system every three months with Dust Plus® Filters, residual amounts of vapors, fumes, and dust are prevented from continuously recirculating into the salon or from seeping into neighboring businesses.\r\n\r\nGeneral room ventilation and A/C systems exchange the air inside a salon with fresh air from outside. Standard HVAC fiberglass filters collect some dust and pollen but cannot remove salon-specific vapors or the smallest dust particles.\r\n\r\nThe Dust Plus® Filters are designed to remove, capture, and eliminate chemical vapors and dust. A front panel of electro-statically charged polypropylene increases the dust-holding capacity. The electrostatic charge is an inherent property of the 2 layers of woven fabric in the front panel and remains constant even with continual washing.\r\n\r\nA back panel of activated carbon removes, captures, and eliminates chemical vapors in the salon’s air. For most salon environments, the disposable back panel of activated carbon will last about three months.\r\n\r\nEasy to Maintain—Plain water and a mild detergent should be used on the front panel to periodically rinse away accumulated dust and other micro-particles. The back panel should be removed from the frame and vacuum-cleaned to extend its useful life."
<https://aerovexsystems.com/product/dust-plus-replacement-filters/>