20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack dis Maximize your yields in a

Maximize your yields in a 4x4 grow tent with the HLG BlackBird — Horticulture Lighting Group's flagship Scorpion Series LED designed for serious home growers who demand professional-grade performance

This lamp is an excellent choice to maximize the performance of any 315W CMH grow light system

Use the Oakton pH tester with accurate ATC to get instant at-a-glance readings

5 inch Folding Saw w/Steel Handle

PPF: 150 umol/s

20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack dis Maximize your yields in aImportant 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