BestAir LN2025-13C Furnace Filter, 20" x 25" x 5", Lennox Odor Eliminating Replacement, MERV 13 MERV 13 Removes 99% of particles up to 10 microns: Dust/Lint, Pollen, Dust Mite, Dander, Mold Spores, Bacteria, Smoke, Virus Carriers, Smog, Odors. Fits Lennox 20 x 25 x 5 (actual 193/4 x 24 x 41/4 ") Model: HCC20-28 Filter Models: HCXF20-10, HCF20-10, HCF20-16 Carbon Infused filter media for neutralizing common household odors Easy to install and Lasts up to 12 months and proudly Made in the USA