Sloppy wide furnace filter slot

air filter slot cover   Dan air filter slot cover

FilterLock® can be used with any 1 air filter to improve indoor air quality and reduce energy consumption · Sealing air leakageby-pass at the filter slotdoor

The air filter moves around too much inside the filter housing slot Once installed, the air filter does not completely cover the vent or duct In either case, a dirty air filter equals lower efficiency Did you Leaving the filter slot open will often lead to a 30%-50

jelly boom slot The vast majority of furnace installations are completed with shop-made return boots that incorporate a slot into which the furnace filter is The air filter moves around too much inside the filter housing slot Once installed, the air filter does not completely cover the vent or duct