18x22x1 MERV 7 Plus Carbon AC Furnace Filters 12 Pack timers-and-instruments sever the cutting from the

sever the cutting from the parent plant by cutting through the stem at a 45° angle

- Smart Ignition

Slowly add oil to top of "oil level" line

You can daisy-chain up to 4 of these units to the MTMDU unit to maximize your seed starting area

Push the sewn-in button on the underside of the cap’s brim and you’re good to glow

18x22x1 MERV 7 Plus Carbon AC Furnace Filters 12 Pack timers-and-instruments sever the cutting from theNordic 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.