Filterbuy 17x21x1 MERV 11 Pleated HVAC AC Furnace Air Filters (6-Pack)

17x21x1 air filters for your furnace, air conditioner, heat pump, or HVAC system Actual size (exact dimensions): 17 x 21 x 1 inches (6-Pack) MERV 11 electrostatic media (MPR 1200, FPR 7) protects against 95% of particles Pleated design traps more airborne particles and lasts 3x longer than fiberglass All industrial-grade components are made in the USA and designed to be recycled