20x25x4 (3 5/8) Pleated MERV 8 Air Filters 2 Pack double-ended Upgrade your grow operation with

Upgrade your grow operation with GroEzy — the efficient

amino acids and protein production

and Flowers

The internal timer allows you to turn the light on or off automatically and separately

waterproof combination tester has an easy to read LCD and an automatic shut-off

20x25x4 (3 5/8) Pleated MERV 8 Air Filters 2 Pack double-ended Upgrade your grow operation withImportant 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