20 Inch Height

20x20x4 MERV 10 AC Furnace 4 Inch Air Filters. 2 Pack. Actual Size: 19-1/2 x 19-1/2 x 3-3/4

Free and Fast Shipping on 2 packs of 20 x 20 x 4 MERV 10 AC & Furnace 4 Inch Air Filters. Actual Size: 19-1/2 x 19-1/2 x 3-3/4.  Filtration Rating: MERV 10, MPR 600-700, FPR 5-6. Protects: Lint, Dust, Pet Dander, Pollen, Dust Mites,...

20x20x2 MERV 10 AC Furnace 2 Inch Air Filters. 3 Pack

Free and Fast Shipping on 20 x 20 x 2 MERV 10 AC & Furnace Air Filters.  Actual Size: 19 ½” x 19 ½” x 1 3/4”.  Filtration Rating: MERV 10, MPR 600-700, FPR 5-6.  Protects: Lint, Dust, Pet...

20x20x4 MERV 13 HVAC Air Filters

As Low as $22.39 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,...