14x25x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Garden Accessories If the probe face is

If the probe face is dirty or contaminated

Side-to-side air distribution improves cooling performance and energy efficiency

The 11 lbs cube expands quickly to over 2 ½ cu ft of a rich growing medium

Breakdown occurs slowly

Versatile Soluble Seaweed Extract can be sifted with soils to create custom blends for planters or added to the hydroponic reservoir

14x25x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Garden Accessories If the probe face isNordic 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