20x20x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack ventilation and ducting making it suitable for every

making it suitable for every growth stage from seedling to peak flower

Use Extreme Serene in conjunction with any nutrient program or as a foliar feed

phthalates

10'' or 12'' duct diameters

20x20x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack ventilation and ducting making it suitable for everyNordic Pure 20x20x1 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material