18x22x1 MERV 13 AC Furnace Filters 12 Pack harvest-solutions At an application rate of

At an application rate of 5 ml per gallon

Use in conjunction with a fertilizer program

Preservatives have been added to the medium to reduce the possibility of mold

• Automatically adjusts to sharpen different blade grinds safely

18x22x1 MERV 13 AC Furnace Filters 12 Pack harvest-solutions At an application rate ofNordic 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