20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 12 Pleated Plus Carbon 2 Pack water-filtration automated quality control

automated quality control

Effective control of two spotted spider mites

The Advanced light meter comes complete with a remote sensor

Internal Check Valve

This durable and high quality 12"

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 12 Pleated Plus Carbon 2 Pack water-filtration automated quality controlImportant 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,