12x20x1 MERV 10 Pleated HVAC Air Filters by Glasfloss. ( Quantity 5 ) Exact Size: 11-1/2 x 19-1/2 x 7/8

Exact Measurements: 11-1/2 x 19-1/2 x 7/8 footes | Nominal Size: 12x20x1 | Quantity 5 Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800; or FPR 5-6 rating. Filters & blocks small particles such as Lint; Dust; Pet Dander; Pollen; Dust Mites; Smog; & Mold. Improved 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.