AllergyZone Azfl-100 Filterlock Furnace Filter Slot Seal Door Cover

I just had the air intake on my furnace expanded, but they didn't update the filter slot In this case, you might have some recourse against

Where's the Furnace Filter? Multiple return registers: Look for an air handler with a slot and removable cover where the filter sits

furnace filter slot cover AllergyZone - FilterLock Filter Slot Seal – Seal Cover for Any 1” Furnace Filter, Up To 25” Long Protect Your HVAC System: FilterLock is a patented

cat slot 1 analysis 2023 furnace filter The problem is you might think you are doing everything correctly but if you have