12x27x1 MERV 13 AC Furnace Filters 6 Pack pots-and-containers the PHR3150 is your best

the PHR3150 is your best choice for performance and value

pH+ is designed specifically to increase the pH level during both the Grow and Bloom phase

Spend Less Time Cleaning & More Time Trimming

The rack unit comes standard with a port for nitrogen assistance

12x27x1 MERV 13 AC Furnace Filters 6 Pack pots-and-containers the PHR3150 is your bestNordic Pure MERV 13 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 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200