The Resideo 50000293-003 Media Post Filter 20" x 10" is a high-efficiency replacement air filter designed for compatible whole-house media air cleaners. Manufactured by Resideo, it captures airborne particles such as dust, pollen, and debris as air circulates through the HVAC system. Installed in residential furnaces and air handlers, the filter improves indoor air quality while prote... https://www.partshnc.com/50000293-003-resideo-mediapostfilter-1pc-20x10