FilterLock Filter Slot Seal – Seal Cover for Any 1” Furn

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If your filter slot on your furnace is exposed, dust and dirt can bypass your filter and go directly

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stacked valentine hearts slot The filter box cover is removed, to show the slots where the prefilter, bag filter and HEPA filter are installed Air flow into the cleanroom is from right to Buy AllergyZone FilterLock Furnace Filter Slot Seal Door Cover at