18x18x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack LED Bio-Active: multiple strains of mycorhizzae

Bio-Active: multiple strains of mycorhizzae for optimum root colonization

Kings Mix is the perfect solution for light deprivation

Nordic Pure 16x28x6 Aprilaire Space-Gard 2400 Replacement Air Filters Part 401 MERV 10 Plus Carbon are made of a dual material where the MERV rated material has been fused together with a carbon layer

Tough nylon fabric that handles loads without tearing

18x18x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack LED Bio-Active: multiple strains of mycorhizzaeNordic 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