Protect Plus Purafilter 2000 12 in. H X 4 in. W Rectangular Vent Filter

The secret to cleaner indoor air is to prevent particles from entering into your home's HVAC system. It is not uncommon for a home to have more than a dozen floor register vents. Dirt, hair, bugs and carpet fibers easily fall into your home's floor registers and make their way into the ductwork of the house.