10x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES External Total Control: WF840 is

External Total Control: WF840 is dimmable and distributes broad

Can be applied throughout the growing season

Detection - CIS / UV / IR / MG / MT

Precision German glass filter lens with our patent pending Rendition Perfect Color HPS technology

Set total cycle from one of the four preset settings: 12 hours

10x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES External Total Control: WF840 isNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.