Dynamic Media Air Filter!Combining ease of installation with low static pressure (for lower energy consumption and system wear), 1” Dynamic Air Filters are high-efficiency whole-house EACs with an equivalency rating of MERV 13.As tiny sub-micron particles and volatile organic compounds (VOCs) pass through the central heating and cooling system, they become . The particles get larger as they join together with other particles and collect on a disposable low-static media pad with an activated charcoal center screen.Dynamic Media Air Filters install directly into a 1 filter rack in existing heating & cooling system or filter grilles using simple 24V wiring connected to the central HVAC System or via a Powered Transformer (sold separately). Its electronically , enhanced media combines elements of both electronic and media air filters.