14x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack Grow System/ Trays/ Reservoirs The Hawkeye from TrolMaster provides

The Hawkeye from TrolMaster provides an economical and accurate method to monitor an enclosed space

Light weight and easy to install

Known to survive temperatures over 100° in field crop applications

Turn Loc System - 6061 Aluminum

This hand-held meter comes with a Soil pH Probe

14x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack Grow System/ Trays/ Reservoirs The Hawkeye from TrolMaster providesNordic 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