23 1/2x25x1 Exact MERV 7 AC Furnace Filters 6 Pack grow-light-ballasts The unit's aluminum frame is

The unit's aluminum frame is anodized with a light-brush finish

and amplifying aroma and flavour in all flowering and fruiting plants

blue in color

The Grow1 line of Power

23 1/2x25x1 Exact MERV 7 AC Furnace Filters 6 Pack grow-light-ballasts The unit's aluminum frame 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