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4 Inch Air Filters

  • 12x24x4 MERV 13 HVAC Air Filters

    12x24x4 MERV 13 HVAC Air Filters

    $25.75

      As Low As $20.15 Per Filter!   12 x 24 x 4 HVAC Air Filter.   Actual Size: 11-1/2 x 23-1/2 x 3-3/4.   Filter Rating: MERV 13 | FPR 10 | MPR 2200.   Protects: Pollen, dirt, dust, pet dander, viruses, smoke,...

  • 12x24x4 MERV 11 HVAC Air Filters

    12x24x4 MERV 11 HVAC Air Filters

    $21.27

      As Low As $16.79 Per Filter!   12 x 24 x 4 MERV 11 HVAC Air Filters.   Actual Dimensions: 11-3/8 x 23-3/8 x 3-3/4.   Filtration Rating: MERV 11, FPR 7, MPR 1000.   Protection: Smoke, Pet Dander, Pollen,...