Airteva AC, Furnace Filter With (1) Biosponge Plus Replacement Pad 16 1/4 x 21 1/2 x 1) Actual Size: 16 1/4 x 21 1/2 x 3/4"

Provides maximum protection against airborne contamination Includes (1) permanent aluminum frame & (1) BioSponge Plus refill Simple to use, easily fits all makes and models of furnaces and air conditioners Backed by a 10 year warranty Made from extruded heavy duty aluminum with patented Leak-Guard seal BioSponge Plus filter media eliminates the filter as a potential breeding ground for micro-organisms and controls airborne germs with its Ageis microbe shield Dual density design for extended 60 day filter life Reusable filter