with this furnace filter 18x20x1 being one of their best-performing products. This MERV 11 rated filter works great for families with pets and children as it can remove pollutants from the environment, leaving it clean and friendly for everyone. What’s more, the ...
BestAir A201-SGM-11R Aprilaire/SpaceGard 20 x 25 x 6 Series 2000 MERV 11 Furnace Filters 64.2 out of 5 Stars. 6 reviews $105.21 current price $105.21 $17.54/count 18x30x1 AC and Furnace Air Filter by Aerostar - MERV 13, Box of 6 ...