Filtrete 9805-4 Air Filter, 20 in L, 14 in W, 11 MERV, 1000 MPR, Polypropylene Frame

Opt for a Filtrete™ allergen defense air filter to transform your central heating and cooling system into a whole-home air filtration operation. This no-nonsense filter helps capture varying sizes of particles, from the large (lint, pollen, dust and pet dander) to the microscopic (smoke and smog).