Specifications MERV Rating 11 Filter Life 6-Months Nominal size 20 x 20 x 4 Actual size 19.5 x 19.5 x 3.75 inch Made in USA Replacement for Following Models Honeywell F100B1024,FC100A1011,FC35A1019,F100F1020,FC200E1011,203721,F100F2036 Bryant B2-1056,M2-1056,P102-2020,CMF-2020,MF2020,P102-2020BB,FILXXFNC0021,FILXXFNC0121 White Rodgers ACM1600M,FR1600M-111,FR1600M-108 Features MERV 11 Rating MERV 11 filter blocks almost all bacteria from the air while keeping proper air flow and minimizing system backpressure. It effectively reduce Lint, Dust, Pollen, Dust Mite Debris, Mold Spores, Pet Dander Smoke Smog. Superior Filtration Efficiency Pleated air filters are at least 20 times more efficient than fiberglass filters. LONG-LASTING Our Filters are designed to last up to 6-Months, 3 times longer than fiberglass filters. If you have pets, kids, or allergy sufferers in your home or business, replace your filters more often to maintain superior indoor air quality and keep your energy costs low. MADE IN THE USA All air filters are manufactured in the USA using 100% American made components.