20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 1 Pack DUCTWORK Comes wired 240V with plug

Comes wired 240V with plug

Sustainable: Is produced in energy efficient and environmentally friendly facilities

automatic buffer recognition

Calibration of pH can be with 2 or 3 points

Quick Disconnect

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 1 Pack DUCTWORK Comes wired 240V with plugImportant 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,