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  • 18x24x4 MERV 13 HVAC Air Filters

    18x24x4 MERV 13 HVAC Air Filters

    $24.99

    As Low as $19.99 per Filter!    18 x 24 x 4 HVAC Air Filter.  Actual Size: 17-3/8 x 23-3/8 x 3-3/4.  Filter Rating: MERV 13 | FPR 10 | MPR 2200.  Protects: Pollen, dirt, dust, pet dander, viruses, smoke,...

  • 18x24x4 MERV 11 HVAC Air Filters

    18x24x4 MERV 11 HVAC Air Filters

    $18.99

    As Low as $14.99 per Filter!   18 x 24 x 4 MERV 11 HVAC Air Filters.  Actual Dimensions: 17-3/8 x 23-3/8 x 3-3/4.   Filtration Rating: MERV 11, FPR 7, MPR 1000.  Protection: Smoke, Pet Dander, Pollen, Bacteria,...