20x24x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Reflectors & Grow Lights Heavy duty construction with galvanized

Heavy duty construction with galvanized steel

Provide increased plant vigor to withstand environmental stressors

micro-tubes and 1" control valves

DESIGNED TO WORK WITH B-Lite Master Zone Controller (Not Included)

Can also use as a foliar at the same rate 2-4 times per week

20x24x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Reflectors & Grow Lights Heavy duty construction with galvanizedNordic Pure 20x24x4 Pleated Air Filters MERV 15 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, smoke particles, smog, allergens, virus carriers, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured