Stack is a natural plant nutrient made from kelp extract
It uses a new innovative dripping method & hose holding technology
7/16'' THIN Super Steel Stakes are ready for heavy lifting
3000K 315W ceramic metal halide lamp included
22x29x1 MERV 13 AC Furnace Filters 6 Pack Reflective & Greenhouse Films Stack is a natural plantNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200