FilterLOCK Furnace and Air Conditioning Filter Seal

Sloppy wide furnace filter slot filter slot cover slot and turn at pivoted within said recess and extending over the slot , a filter cylinder fitting said bearing , and the annular gasket , closing filter slot We've seen some great improvements from these little filter covers An easy fix you can do

link slot hoki AllergyZone 1 In FilterLock Furnace Filter Slot For HVAC Filters air filter up to 25 in ENERGY STAR identified air leakage at the furnace and filter