10x14x1 MERV 13 AC Furnace Filters 12 Pack double-ended With an ideal N-P-K ratio

With an ideal N-P-K ratio of 7-9-5

When used preventatively in an Integrated Pest Management program

This greatly reduces the air conditioning required to maintain the growing envirment at desired temperatures

Continue growing plant until female flowers are showing and our ready to collect pollen

10x14x1 MERV 13 AC Furnace Filters 12 Pack double-ended With an ideal N-P-K ratioNordic 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