Item Model Number: FKFB19X21
Brand: Filter King Filter size: 19x21x1 Actual Size: 18.5 x 20.5 x .75 1-Inch Filter MERV 8 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Item Model Number: FKFA19X21
Brand: Filter King Filter size: 19x21x1 Actual Size: 18.5 x 20.5 x .75 1-Inch Filter MERV 11 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Item Model Number: FKFD19X21
Brand: Filter King Filter size: 19x21x1 Actual Size: 18.5 x 20.5 x .75 1-Inch Filter MERV 13 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Item Model Number: FKFI19X21
Brand: Filter King Filter size: 19x21x1 Actual Size: 18.5 x 20.5 x .75 1-Inch Filter MERV 13 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use
Item Model Number: FKFO19X21X1
Brand: Filter King Filter size: 19x21x1 Actual Size: 18.5 x 20.5 x .75 MERV 10 Carbon Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Smoke, Odor Residential / Commercial Use