12x25x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 6 Pack Electrical Components Pre-filters work by trapping dust

Pre-filters work by trapping dust

high-efficiency photons exactly where your plants need them — whether you're running a vertical farm

The Grow1 3 Gallon Pump Sprayer is made from the highest grade polyethylene plastic that resists corrosion from insecticides or herbicides

It will remain effective for approximately 10-12 weeks and can be re-applied at half the initial rate to extend root protection in the field or when transplanting to a larger container

12x25x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 6 Pack Electrical Components Pre-filters work by trapping dustNordic 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