20x20x5 air filters for your furnace, air conditioner, heat pump, or HVAC system Actual size (exact dimensions): 19.63 x 19.81 x 4.38 inches (1-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 Compatible Models: Honeywell F25 (#203721), F35 / F35R (#FC35A1019), F100 / F150 (#FC100A1011), F200 (#FC200E1011), Lennox (X0585, X8305, X8308), Collection Cells (F25F1018, F35F1016, F100F1020, F50A1124, F50A1165, F50E1026, F50E1182, F50E6124, F50E6165, F50E8021, F50E8062, F50F1107, F50F1040, F55A1244, F55A1426, F55A1459, F55F1029, F55F1052, F58A1050, F58F1026, F300E1027)
