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Quick view Compare 20x20x4 MERV 10 ( FPR 6-7 ) AC and Furnace Pleated 4" Inch Air Filters. Quantity 4. Exact Size: 19-1/2 x 19-1/2 x 3-3/4 $58.99 $47.97 Choose Options
Quick view Compare Glasfloss ZL 20x20x4 MERV 11 ( FPR 7 ) Pleated AC Furnace Air Filters. Case of 6. Exact Size: 19-1/2 x 19-1/2 x 3-3/4 $98.95 Add to Cart
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Quick view Compare Glasfloss ZL 20x20x4 MERV 13 ( FPR 10 ) Pleated AC Furnace Air Filters. Case of 6. Exact Size: 19-1/2 x 19-1/2 x 3-3/4 $152.95 Add to Cart
Quick view Compare Glasfloss ZL 20x20x4 MERV 13 ( FPR 10 ) Pleated AC Furnace Air Filters. 2 Pack. Exact Size: 19-1/2 x 19-1/2 x 3-3/4 $70.95 Add to Cart