HealthSmart 17 x 17 AC filter/Furnace filter with (1) BioSponge Plus Replacement: Home Improvement. Buy HealthSmart 17 x 17 AC filter/Furnace filter with (1) BioSponge Plus Replacement: Furnace Filters - ✓ FREE DELIVERY possible on eligible purchases. Provides maximum protection against airborne contamination. Actual size: 17 x 17 x 3/4" 。 Saves you time and money, clean systems use less electricity, and breakdown less often 。 Includes: (1) permanent aluminum frame & (1) BioSponge Plus refill. 。 Simple to use, easily fits all makes and models of furnaces and air conditioners--any size available 。 10 Year Warranty, you'll always have a filter that fits and performs perfectly. 。 What Makes AIRTEVA Filters Different? 。 With ordinary filters up to 50% of the air moved through your system will not go through the air filter at all. That's because most air filters on the market are either made of cardboard or plastic, and these types of filters are unable to make a proper air seal. This means the air and pollution will simply go around the filter bypassing it completely. 。 The AIRTEVA filter is made from extruded heavy duty aluminum and incorporates our patented Leak-Guard seal, so the air has no choice but to pass through the filter material, giving you 100% air filtration.。 About BioSponge Plus filter media: BioSponge Plus filter media eliminates the filter as a potential breeding ground for micro- organisms, they also control airborne germs with its Ageis microbe shield. This germ fighting filter features a special dual density design to allow for an extended 0 day filter life. 。 Replacement is a breeze, just peel out the soiled media, and replace with a fresh one. 。 Filter Measuring: Because our filter frames are constructed from aluminum, they don't bend. Be sure to order a size that can easily slide into your system. 。Search "AIRTEVA" for more sizes. 。 。 。