20x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack misc dim and boost multiple (USB-compatible)

dim and boost multiple (USB-compatible) Hydrofarm ballasts at once—up to 256 in each of two independent zones for a total capacity of 512 ballasts

allowing control of your lighting with 0-10V protocol

Many growers use them to inoculate coco coir or peat-based substrates

This is a soil amendment that aids in micronutrient uptake

20x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack misc dim and boost multiple (USB-compatible)Nordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.