Filter Lock Furnace Filter Slot Covers and Filter Maintenance

The FilterLOCK covers and seals the standard 1” furnace filter slots The overlapping two-piece design allows for filter slots measuring up to 25” in width

Note that there is no door that closes to cover the filter slot It's permanently open by design AFAIK Thanks More Pictures Filter

filter slot cover The vast majority of furnace installations are completed with shop-made return boots that incorporate a slot into which the furnace filter is

fortune panda slot Buy AllergyZone FilterLock Furnace Filter Slot Seal Door Cover at