Glasfloss ZL 20x25x1 MERV 10 Pleated AC Furnace Air Filters. Box of 4. Exact Sizeize: 19-1/2 x 24-1/2 x 7/8

Actual Measurements: 19-1/2 x 24-1/2 x 7/8 Inches | Nominal Size: 20x25x1 | Quantity 4 Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR 5-6 rating. Filters & captures small particles such as Lint, Dust, Pet Dander, Pollen, Dust Mites, Smog, & Mold. Upgraded MERV 10 Filtration with similar air flow and resistance as a MERV 8 filter. Durable & Long Lasting: Heavy duty frame won't buckle and pleats will not allow microbial growth. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and are manufactured in an engineered gradient structure. The engineered grading structure media supports high dust-holding capacity and long filter service life. Made in the USA. Ideal for residential, commercial, schools, office, & industrial filtration applications. For optimal performance, recommended to change at least every 3 months.