Heating system: Thermosyphon (passive) Connection type: Direct-plug Installation: Roof mounted Housing material: Coated steel Certification: Ce Capacity: 165 Place of origin: Zhejiang china (mainland) Brand name: Jinyi & oem Model number: Jng5818-15 Out tank material: Coated steel Out tank diameter: 470mm Out tank thickness: 0.4mm Inner tank material: Sus304-2b Inner tank diameter: 360mm Inner tank thickness: 0.4mm Tank insulation pu foam: High density Tank insulation thickness: 55mm Vacuum tubes length: 1800mm Support bracket material: Galvanized steel Packaging detail:1. Cartons: 4ctns 2. Pallet: (charge by extra)