BestAir Extreme Allergens, Pollen & Dander Air Cleaning Filter For Air Bear - 20 x 25 x 5 MERV 11. Optimized For Air Bear 20 x 25 x 5 (actual 19 3/4 x 24 1/4 x 4 7/8”) Fits: Air Bear Models: Supreme 2000; 435790-027; 455602-019; 459200-005; Skuttle Model: DB0-0025-020; GeneralAire Model: MAC2000; Source1 Model: S1-MAC10202505; Ultravation Model: 90-007; Braeburn Model: 162025; 162026. Our specialized filtration media has the most effective combination of particle capture rate, with minimum pressure drop, ensuring the best overall performance of your HVAC system and particle capture rate to clean the air. This media has special emphasis on particulate size that captures most airborne allergens. Made in the USA