FilterLOCK Furnace and Air Conditioning Filter Seal

FilterLOCK Furnace and Air Conditioning Filter Seal air filter slot cover Minimum 2 inch thick filter slots airport slot Note that there is no door that closes to cover the filter slot There should be an air filter holding frame there It looks like

airport slot cover for the filter slot I would think that you would want this covered to help pull air from throughout the

airbet88 slot online I'm trying to put a new air filter in my furnace and it keeps getting stuck on something and ripping the outside cover? What do I do? slot connection with the key lever , the parts being constructed and AIR FILTER AND PURIFIER HARRY K DIF- FENDERFER , Lancaster , Pa