12x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack meters-&-solutions Eight speed options are available

Eight speed options are available with power switch

Dimensions   45

They can be located outside the grow room and a run of ducting can be extended from them into the room to extract the air and filter it

They attack more than 230 kinds of soil dwelling and wood boring pests

Nordic Pure 12x24x2 MERV 14 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

12x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack meters-&-solutions Eight speed options are availableNordic Pure Half Inch Ring Panel AC Furnace Air Filters consist of an internal frame bonded between flat layers of two different types of electrostatically charged HVAC furnace filter media. The first layer is a high capacity, polyester filter material which acts as a pre filter, capturing large airborne particles. The second, more efficient, layer is a MERV rated smooth poly blend filter material. The electrostatic charge works as a magnet to draw in