99.97%

99.97% HEPAs is constructed with a 26-gauge galvanized metal frame. The media is constructed of a water-resistant, inorganic glass microfiber, separated with multiple rolled-edge corrugated aluminum separators. The media cartridge is sealed with a fire-retarding, rubber base, two-part sealant that bonds the media and separators to the interior of the frame, with a 1/4” thick closed cell neoprene gasket on the outside of the filter. 99.97% HEPAs are rated for 180 degrees Fahrenheit environments.