Black Ops Replacement Pre-Filter 10 in x 24 in Black Grow Lab 4 ft x 4 ft

4 ft x 4 ft and 4 ft x 6 ft models feature 5 mm material thickness

Automatically converts between HPS and MH light bulbs by micro-chip programming

Carry with the grip handle or use the included shoulder strap

Disclaimer: - pH Perfect Connoisseur is not for the grower who has been growing for less than 1 year - pH Perfect Connoisseur is not for the grower who has not dialed in their growing environment - pH Perfect Connoisseur is not for the grower who is struggling to get great results from other pH Perfect Base nutrients

Black Ops Replacement Pre-Filter 10 in x 24 in Black Grow Lab 4 ft x 4 ftUse these for a pre filter on you Black OpsNutrients Carbon Filters. Match the pre filter to your Black OpsNutrients Carbon Filter size. Helps to extend the life of your Black OpsNutrients Carbon Filter by keeping dust and other particles out. The black color does not show the dirt as much.