16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 1 Pack special-order Works in both salt water

Works in both salt water and fresh water and has a heating range from 66°F to 90°F

and trichoderma

• Internal Check Valve

24" interior width

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 1 Pack special-order Works in both salt waterImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,