Quick view Compare Choose Options 20x20x4 MERV 11 HVAC Air Filters $18.99 As Low as $14.99 per Filter! 20 x 20 x 4 MERV 11 HVAC Air Filters. Actual Dimensions: 19-1/2 x 19-1/2 x 3-3/4. Filtration Rating: MERV 11, FPR 7, MPR 1000. Protection: Smoke, Pet Dander, Pollen, Bacteria,...
Quick view Compare Temporarily out of stock 20x20x4 MERV 13 HVAC Air Filters $24.99 As Low as $19.99 per Filter! 20 x 20 x 4 HVAC Air Filter. Actual Size: 19-1/2 x 19-1/2 x 3-3/4. Filter Rating: MERV 13 | FPR 10 | MPR 2200. Protects: Pollen, dirt, dust, pet dander, viruses,...
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