The MRCOOL GCIK-CL4T-AM GeoCool Inverter Series 4 Ton Closed Loop Installation Kit with Angled Manifold is a complete geothermal installation package designed for 4-ton GeoCool Inverter heat pump systems. It includes HDPE loop piping, an angled four-circuit insulated header, a two-pump non-pressurized flow center, geothermal hoses, fittings, and propylene glycol. https://www.partshnc.com/mrcool-geocool-inverter-series-4-ton-closed-loop-geothermal-installation-kit-with-angled-manifold-gcik-cl4t-am