Item Model Number: FKFB19.25X21.25X4A
Brand: Filter King Filter size: 19.25x21.25x4 Actual Size: 19.25 x 21.25 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: FKFA19.25X21.25X4A
Brand: Filter King Filter size: 19.25x21.25x4 Actual Size: 19.25 x 21.25 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: FKFD19.25X21.25X4A
Brand: Filter King Filter size: 19.25x21.25x4 Actual Size: 19.25 x 21.25 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: FKFO19.25X21.25X4A
Brand: Filter King Filter size: 19.25x21.25x4 Actual Size: 19.25 x 21.25 x 3.75 MERV 10 Carbon Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Smoke, Odor Residential / Commercial Use