April Aire, 813, Replacement Filter Cartridge, 20” x 25” LP-FXNDIO16-0 This innovative series introduces a

This innovative series introduces a new standard for mid-range ventilation fans

Multiple branch circuit capability

Length 7 1/8 in

All parts are NEW/NEVER USED and fully functional

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April Aire, 813, Replacement Filter Cartridge, 20” x 25” LP-FXNDIO16-0 This innovative series introduces aApril Aire, 813, Replacement Filter Cartridge, 20 x 25 Product Details This genuine filter from Aprilaire is designed with an accordian style for convenient storage and can be easily inserted using the unique interlock rail system. Simply unpack, slide in, and close the door for a hassle free installation. MERV 13 filtration traps common airborne allergens as they pass through the MERV 14 filter including dust, pollen, mold spores, bacteria, pet