16x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 6 Pack food-&-water-storage KIND GROW 2-2-4

KIND GROW 2-2-4

• Compatible with 4" to 12"round air ducts

GrowSafe is also:

Best used for seed germination and propagation

Cover with opaque plastic or foil

16x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 6 Pack food-&-water-storage KIND GROW 2-2-4Important 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. If you are replacing a 4 3 8 depth 16x20x4 filter