17_1/4x23_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack Paleo Bloom Nordic Pure 12x24x4 Pleated Air

Nordic Pure 12x24x4 Pleated Air Filters MERV 15 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home

especially beneficial both for home growers and commercial growers

Seaplex Cold Processed Seaweed and Nitrex Organic-Based Nitrogen Supplement for fantastic results

Regular flanges come in 4"

These refill sheets are compatible with standard growing trays such as in the Speed Starter Kit

17_1/4x23_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack Paleo Bloom Nordic Pure 12x24x4 Pleated AirNordic Pure MERV 7 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 and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters