12x22x1 Exact MERV 7 AC Furnace Filters 6 Pack lighting-systems/kits allowing the user to cut

allowing the user to cut many custom lengths

A clogged junction will typically exhibit erratic readings that will not stabilize

Use with the FloraFlexTM Drip Shield

10" unit with one corona discharge cell

raise to 30 inches for vegetative growth

12x22x1 Exact MERV 7 AC Furnace Filters 6 Pack lighting-systems/kits allowing the user to cutNordic 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