20x25x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack complete grow kit This symbiotic relationship increases the

This symbiotic relationship increases the supply of nutrients to plants

SNS-311 is made with Ascorbic Acid (Vitamin C)

The Harvest Keeper Impulse Bag Sealer is a premium

000 initial lumen output

Gray Mold (Alternaria sp

20x25x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack complete grow kit This symbiotic relationship increases theImportant 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 20x25x4 filter