20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 12 Pleated Plus Carbon 2 Pack Commercial Lighting and Federal VA Hospitals using

and Federal VA Hospitals using the device in their Intensive Care Units

Orders of 6 or more require a freight quote to ship

before adding any other nutrients

Case quantity = 10

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 12 Pleated Plus Carbon 2 Pack Commercial Lighting and Federal VA Hospitals usingImportant 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,