20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 14 Air Filters 1 Pack cleanroom Thanks to its powerful flow

Thanks to its powerful flow rate

see label and other online resources for details

Green lacewing will overwinter in the pupal stage in cooler climates

the iPonic controller allows you to program all functions together and eliminate the need for multiple controllers

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 14 Air Filters 1 Pack cleanroom Thanks to its powerful flowImportant 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,