20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 13 Plus Carbon 4 Pack Electrical Components and high-volume operations that can't

and high-volume operations that can't afford inconsistent humidity

These seed starting trays are made out of food safe polypropylene plastic

The air conditioner filter media will not support the growth of mold or bacteria on the air filter itself

Construction: Surgical grade 316 Stainless Steel

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 13 Plus Carbon 4 Pack Electrical Components and high-volume operations that can'tImportant 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,