12x27x1 Exact MERV 12 AC Furnace Filters 6 Pack Liquid & Weight Measuring Nordic Pure chose to follow

Nordic Pure chose to follow the industry standard

There are holes on the side to allow bamboo sticks for stabilization

No change to grow technique

Benefits of Natular G30 WSP:

healthy vegetative growth in vegetables and herbs

12x27x1 Exact MERV 12 AC Furnace Filters 6 Pack Liquid & Weight Measuring Nordic Pure chose to followNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different