Furnace filter slot magnet

Product Description

Furnace filter slot magnet|Sealing air leakage/by-pass at the filter slot/door forces dirty air to travel through the filter instead of around it|Reusable overlapping 2-piece design works with any brand 1 in. air filter up to 25 in. L|Filter lock has built-in magnets which hold it securely to the metal duct work|Installs in seconds without the use of any tools