17x25x1 Exact MERV 13 AC Furnace Filters 12 Pack organic The stainless steel blades and

The stainless steel blades and rugged construction make it perfect for commercial farms

Most tap water contains chlorine and chloramines that can devastate the beneficial bacteria and fungi living in your soil

Sachet releases provide up to 6 weeks of control

Use in conjunction with regular nutrient program throughout the vegetative stage and first three weeks of the bloom stage

Full spectra to cover the whole grow cycle

17x25x1 Exact MERV 13 AC Furnace Filters 12 Pack organic The stainless steel blades andNordic 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