4 Thick Filter - Can it be replaced with thin filters? - HVAC-Talk

Protect Your HVAC With A Filter Slot Cover - Filter Lock air filter slot cover cover for the filter slot I would think that you would want this covered to help pull air from throughout the air master slot diffuser catalogue Filter Lock is a patented two-piece seal system designed for use with 1” air filters that eliminates air leakage at the filter slotdoor to improve indoor air

airport slot allocation The Filter Slot Seal is ideal for any furnace, air conditioner or air cleaner filter Based on recommendations by the Department of Energy, you should cover