11 3/8x11 3/8x1 Exact MERV 7 AC Furnace Filters 12 Pack Ventilation Size: 20x15

Size: 20x15

- Potassium – works to convert hydrogen and glucose into amino acids and protein

5 cents per gallon of nutrient treated (calculated on the MSRP)

and weed density

75-inch re-sharpenable blades that are made of heavy duty forged high-carbon steel

11 3/8x11 3/8x1 Exact MERV 7 AC Furnace Filters 12 Pack Ventilation Size: 20x15Nordic 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