Airteva AC, Furnace Filter With (1) Biosponge Plus Replacement Pad (18 X 25 x 1) Actual Size: 17 1/2 x 24 1/2 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 Backed by a 10 year warranty, this filter may be the last one you ever need to purchase 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