The Protector - 20x24x1 AC Furnace Air Filter Pack Size:4 Filters allowing air to flow freely

allowing air to flow freely through the filter

and everyday airborne crud before it keeps making laps through your furnace

smelly odors and allergen particles

Just a solid replacement filter made to sit snug

without choking your HVAC system like some overbuilt filter brick trying way too hard

The Protector - 20x24x1 AC Furnace Air Filter Pack Size:4 Filters allowing air to flow freelyOur 2 Ply Antimicrobial Filter is tougher than those cardboard framed filters that hold moisture. The Protector is built with a proprietary antimicrobial filter media making it impenetrable to mold and microbial growth. Trust us, pleats are a bad idea on pants and even worse on filters. Tight Fit Eliminates the risk of unfiltered air passing around your air filter. Mold and Moisture Resistant No mold or microbials hit your air. (because we trap them!)