17x19x1 Exact MERV 7 AC Furnace Filters 12 Pack pump 6cm) "off" level range is

6cm) "off" level range is 1/2" - 1-1/2" (1

• Low dilution rates (only 2-5 ml/gallon)

Chemboys pH Up 50%

mushrooms and other food crops

• Increases insect and fungi resistance

17x19x1 Exact MERV 7 AC Furnace Filters 12 Pack pump 6cm) "off" level range isNordic 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