18x22x1 MERV 13 AC Furnace Filters 12 Pack harvest-solutions • Automatically adjusts to sharpen

• Automatically adjusts to sharpen different blade grinds safely

At an application rate of 5 ml per gallon

Emergency shut-off valve provides fail-safe overflow protection

is not conducive to the spread of plant diseases

Limiting exposure to sunlight and intense heat will help prolong the shelf life

18x22x1 MERV 13 AC Furnace Filters 12 Pack harvest-solutions • Automatically adjusts to sharpenNordic 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