20x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack Water Pumps & Irrigation Supplies Pre-filters work by trapping dust

Pre-filters work by trapping dust

Nordic Pure 12x30x1 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

Solid Start is used from the cloning/seedling phase into the transition phase of the plant’s life cycle

to stimulate plants and increase nutrient uptake - which will lead to faster growth

Aspergillus niger

20x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack Water Pumps & Irrigation Supplies 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