18x18x1 Pleated MERV 14 Air Filters 6 Pack stocked providing a frame that is

providing a frame that is up to 2-5x stronger than competing tent frames

we need precise spectral control

and/or low-light conditions

5 ml per liter of nutrient solution

5 AAA batteries (3)

18x18x1 Pleated MERV 14 Air Filters 6 Pack stocked providing a frame that isNordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.