Filterbuy 18x20x1 MERV 13 Pleated HVAC AC Furnace Air Filters (4-Pack)

18x20x1 air filters for your furnace; air conditioner; heat pump; or HVAC system Actual size (exact dimensions): 17.5 x 19.5 x 0.75 inches (4-Pack) MERV 13 electrostatic media (MPR 1900; FPR 10) protects against 98% 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