16x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 12 Pack soil The Bluelab Grower’s Toolbox combines

The Bluelab Grower’s Toolbox combines the essential tools you need to easily manage your crop by measuring the pH

enabling plants to capture more light and potentially increase growth

Fan and controller contain CNC machined aluminum frames with a modern brushed black finish

high-phosphorus plant nutrient designed to enhance flowering

16x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 12 Pack soil The Bluelab Grower’s Toolbox combinesNordic 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