Item Model Number: FKFB12X12X4
Brand: Filter King Filter size: 12x12x4 Actual Size: 11.5 x 11.5 x 3.75 4-Inch Filter MERV 8 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Item Model Number: FKFA12X12X4
Brand: Filter King Filter size: 12x12x4 Actual Size: 11.5 x 11.5 x 3.75 4-Inch Filter MERV 11 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Item Model Number: FKFD12X12X4
Brand: Filter King Filter size: 12x12x4 Actual Size: 11.5 x 11.5 x 3.75 4-Inch Filter MERV 13 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Item Model Number: FKFO12X12X4
Brand: Filter King Filter size: 12x12x4 Actual Size: 11.5 x 11.5 x 3.75 MERV 10 Carbon Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Smoke, Odor Residential / Commercial Use