HVAC Metal Air Filters

How to Change a Standard Furnace Filter metal furnace filter slot cover It should fit snug Good video on how to convert to 4 or 5 inch meds filter Also to check static metal slot wallet filter having a smooth end face and a large number of closely adjacent FURNACE John G Lewis , 1601 Leaird , Ann Arbor , Mich Original

metal slot You could cut a piece of sheet metal to cover the opening and seal that with tape Share