9_3/4x23_3/4x1 Exact MERV 12 AC Furnace Filters 6 Pack Grow Light Ballasts Made of waterproof and marine-grade

Made of waterproof and marine-grade components

energy-efficient solution for lighting over hydroponics

Addition of fertilizer is necessary when planting and/or repotting

It is also meets the organic production standards of the Organic Materials Review Institute (OMRI) and is OMRI listed for organic production

supports microbial diversity in your soil and improves enzymatic activity

9_3/4x23_3/4x1 Exact MERV 12 AC Furnace Filters 6 Pack Grow Light Ballasts Made of waterproof and marine-gradeNordic 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