Airteva AC, Furnace Filter With (1) Biosponge Plus Replacement Pad (18 X 30 x 1) Actual Size: 17 3/4 x 29 3/4 x 3/4"

Provides maximum protection against airborne contamination with its permanent aluminum frame and BioSponge Plus refill Easily fits all makes and models of furnaces and air conditioners, with a size available to fit any need Backed by a 10-year warranty, this filter may be the last one you ever need to purchase Features a patented Leak-Guard seal to ensure 100% air filtration, with no air or pollution bypassing the filter BioSponge Plus filter media eliminates the filter as a potential breeding ground for microorganisms and controls airborne germs with its Ageis microbe shield Dual-density design allows for an extended 60-day filter life, and replacement is a breeze with the easy-to-peel soiled pad Constructed from heavy-duty extruded aluminum, the filter does not bend, ensuring a perfect fit in your system