How about a FilterLOCK seal for your furnace or air handler? The FilterLOCK is an energy saving, simple to use device that seals the slot that your filter fits into. It offers savings year round on your utility bills, blocks allergens and pollutants from being pumped throughout your home or building.
FilterLOCK is used to seal the standard furnace or air handler filter slot on your unit. The two piece design of the FilterLOCK fits up to 25” filters. It also features magnetic fasteners to hold the FilterLOCK in place on the unit while allowing it to be re-used over and over again.
The FilterLOCK is also Energy Star and Department of Energy recommended.
Made in the USA!