17x20x1 MERV 7 Plus Carbon AC Furnace Filters 12 Pack rock-bottom Features an inline controller to

Features an inline controller to set the fans speed to optimal airflow and noise levels

Make a minimum of three releases

Dimensions: 13" x 16"

Accurate and easy to adjust CO2 flow meter

The HI1286 brings the ability to test pH to any user at an affordable price

17x20x1 MERV 7 Plus Carbon AC Furnace Filters 12 Pack rock-bottom Features an inline controller toNordic 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.