Available on several models equipped with one or more screw compressors, dimensioned to be used with refrigerant type R134a or with the new low GWP HFO-1234ze or with R290. The units of the GHH series are assembled on a strong self-supporting metal screwed and welded structure, painted with epoxy powder with anti-rust coating for outdoor installation. All units are supplied completely wired and ready to be connected to the user’s plant. Prior to delivery every machine is submitted to a performance test, with intervention tests of all the safety systems and components installed. Each unit is available with compressor sound insulation kit for the LN (Low Noise) and LLN (Super Low Noise) versions, for installation in areas where noise emission must be kept to a minimum.