Item Model Number: FKFB18X36X4
Brand: Filter King Filter size: 18x36x4 Actual Size: 17.5 x 35.5 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: FKFA18X36X4
Brand: Filter King Filter size: 18x36x4 Actual Size: 17.5 x 35.5 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: FKFD18X36X4
Brand: Filter King Filter size: 18x36x4 Actual Size: 17.5 x 35.5 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: FKFO18X36X4
Brand: Filter King Filter size: 18x36x4 Actual Size: 17.5 x 35.5 x 3.75 MERV 10 Carbon Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Smoke, Odor Residential / Commercial Use