12x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack featured A simple way to raise

A simple way to raise a hood as plants grow

Integra Boost packs typically last 2–4 months

The Big Bag Bed also air prunes roots while protecting plants from underground pests like gophers and moles

All S-Line models are assembled with high impact resistant polycarbonate casings

Max cable length per group : 100 meters

12x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack featured A simple way to raiseNordic 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