The Resideo POPUP2400 Replacement Filter for Space-Guard is a high-efficiency air filter designed to capture dust, pollen, and airborne particulates in HVAC systems. It fits Space-Guard air purifiers and filtration units to improve indoor air quality by trapping contaminants as air passes through the media. This replacement filter enhances system performance, reduces strain on blower ... https://www.partshnc.com/popup2400-resideo-popupfilterreplacaprilair-2400