16x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack X Nutrients bloom Filter capacity of 25

Filter capacity of 25

• Gold Label HydroCoco by itself is an almost inert substrate

and come with all hardware for easy assembly of your desired lamp orientation

the combination offers excellent thermal insulation

16x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack X Nutrients bloom Filter capacity of 25Important 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