25x28x1 Exact MERV 14 AC Furnace Filters 6 Pack ventilation and ducting This premium blend was formulated

This premium blend was formulated for the discerning Grower

Measures photosynthetically active radiation (PAR) from 400 to 700 nm

Included are beneficial mycorrhizal fungi

Grow-Cubes are easy to use and reasonably priced

Non-woven Blackout Poly is a cost-effective solution for light-deprivation setups that provides maximum light blockage to control the photoperiod of flowering plants

25x28x1 Exact MERV 14 AC Furnace Filters 6 Pack ventilation and ducting This premium blend was formulatedNordic 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.