10x18x1 Exact MERV 12 AC Furnace Filters 12 Pack HPS Apply once a week throughout

Apply once a week throughout the vegetative growth phase of the plant

Rated for 100 gallons per day with a stabilized salt rejection of 98

Can be installed Both vertically and horizontally

for heavier infestations or 4

10x18x1 Exact MERV 12 AC Furnace Filters 12 Pack HPS Apply once a week throughoutNordic 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