16x28x1 Exact MERV 13 AC Furnace Filters 6 Pack X Nutrients Grow Spray 1 Gal It is important to note

It is important to note that because of this high filtration and air flow restriction

airborne pollutants

Can be used together with BioZeus™ "Microbes for Plants" - Blend No

and lanyard

Free of added nitrogen

16x28x1 Exact MERV 13 AC Furnace Filters 6 Pack X Nutrients Grow Spray 1 Gal It is important to noteNordic 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