18x18x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Sungrower Trellis Netting 1000’ and Shorter It is designed to be

It is designed to be mounted outside of the space to be monitored

Absorb nitrogen early in the growth cycle

a speed controller with a power plug

up through 1/3 HP (10 max

in any medium

18x18x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Sungrower Trellis Netting 1000’ and Shorter It is designed to beNordic 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