TrueCLEAN™ 16 X 25-inch enhanced air cleaner deactivates 99% of captured particles. Easy to maintain, quiet advanced three-stage filtration technology. TrueCLEAN uses unique three-step process, charge-capture-destroy. Not only captures more particles than traditional media filters, but also deactivates up to 99% of those particles, keeping your home and family safe. Captures a wide range of particles including airborne dust, pollen, smoke, mold spores and bacteria. Lasts up to four times longer than standard one-inch furnace filter. Replace every 6-12 months. Five-year warranty.