Black Ops Replacement Pre-Filter 14 in x 48 in White Simple Deluxe Better quality and drainage than

Better quality and drainage than other value-priced rockwool

This is the perfect blend for plants during periods of accelerated growth

Enriched with stress reducing vitamins and nutrient transporting acids

Max-Duct™ vinyl has triple foil laminate with very durable white PVC with UV inhibitor coating

5 in stainless steel measuring platform and a durable

Black Ops Replacement Pre-Filter 14 in x 48 in White Simple Deluxe Better quality and drainage thanUse 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 white pre filters give a bright, clean appearance.