20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack coco-cubes No growth stage limitations

No growth stage limitations

Custom protective lining

you would need to cut a rectangle hole approximately 14

and our long-lasting wetting agent

Upon discovery of disease

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack coco-cubes No growth stage limitationsImportant 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,