20x24x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Ventilation VLGR technology allows the Anden

VLGR technology allows the Anden 710 to maximize water removal while utilizing less amps

Always combine with Grow A and Grow B as directed for a complete nutrient profile

and its resistance to crushing

Resistance 2 is the evolution of our classic frame

Great for indoor and outdoor use

20x24x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Ventilation VLGR technology allows the AndenNordic Pure 20x24x4 Pleated Air Filters MERV 13 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, virus carriers, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a