Airteva AC, Furnace Filter With (1) Biosponge Plus Replacement Pad 19 3/4 x 29 3/4 x 1) Actual Size: 19 3/4 x 29 3/4 x 3/4"

Provides maximum protection against airborne contamination Includes a permanent aluminum frame and a BioSponge Plus refill Simple to use and easily fits all makes and models of furnaces and air conditioners in any size available May be the last furnace filter you ever need to purchase, backed by a 10 year warranty Made from extruded heavy duty aluminum with a patented Leak-Guard seal to ensure 100% air filtration BioSponge Plus® filter pads eliminate the filter as a potential breeding ground for micro-organisms and control airborne germs with its Ageis microbe shield Special dual density design allows for an extended 60 day filter life Replacement is easy, just peel out the soiled pad and replace with a fresh one