The MRCOOL GCIK-CL3T-SM GeoCool Inverter Series 3 Ton Closed Loop Geothermal Installation Kit with Straight Manifold is a complete installation package for 3-ton closed-loop geothermal heat pump systems. It includes HDPE ground-loop piping, a three-circuit insulated straight header, single-pump flow center, geothermal hose connections, and propylene glycol heat-transfer fluid. https://www.partshnc.com/mrcool-geocool-inverter-series-gcik-cl3t-sm