13x21x1 Exact MERV 7 AC Furnace Filters 12 Pack pumps-and-irrigation-supplies Mosquito Dunks are favorites of

Mosquito Dunks are favorites of homeowners and professionals providing effective mosquito control around standing bodies of water

Containing dual-ball bearings rated at 67

ECM port : 2 Groups

Elevated airflow accommodating design

Shelf life is typically 2–3 years when stored properly

13x21x1 Exact MERV 7 AC Furnace Filters 12 Pack pumps-and-irrigation-supplies Mosquito Dunks are favorites ofNordic 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