For optimal performance, recommended to change at least every 3 months.. Ideal for residential, commercial, schools, office, & industrial filtration applications. Made in the USA. The engineered grading structure media supports high dust-holding capacity and long filter service life. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and are manufactured in an engineered gradient structure. Durable & Long Lasting: Heavy duty frame won't buckle and pleats will not allow microbial growth. Improved MERV 10 Filtration with similar air flow and resistance as a MERV 8 filter. Filters & blocks small particles such as Lint, Dust, Pet Dander, Pollen, Dust Mites, Smog, & Mold. Comparable to MPR rating 600 to 800, or FPR 5-6 rating. Actual Size: 19 7/8 x 21 1/2 x 7/8 (19.875 x 21.5 x .875) Inches | Nominal Size: 19 7/8 x 21 1/2 x 1 | Pack of 8 Filtration Rating: MERV 10
