bestair, 20' x 25' x 4' air cleaning furnace filter, merv 11, carbon infused to neutralize odor, for honeywell models

Fits Trion Air Bear Model 435790 Fits Honeywell Model 203720 Lasts up to 12 Months Filters airborne particles that can trigger Allergy and Asthma attacks Absorbs extreme odors in your home