1) Inner manifold: Copper header pipe , Potable water rated.Maximum pressure: 1000kPa, Size Ø35mm x 0.8mm thickness 2) Outer manifold: Aluminium alloy with Anodized or Powder Coated Finish , thickness 2mm - Small Size Manifold 3) 75mm distance between vacuum tubes 4) Insulation: High quality Glass Wool (K = 0.043W/mK), 40mm 5) Vacuum tube: Borosilicate 3.3 twin wall glass, AlN/AIN-SS/CU coating ,Vacuum: P<5x10-3 Pa, Ø58mm x 1800mm*1.6mm 6) Heat pipe: High purity “oxygen free” copper pipe with Aluminum fin ,Startup temperature -30 deg. ; 14mm diameter*55mm length condenser , 1mm thickness; 8mm diameter*1650 mm length Body, 0.5 mm thickness 6) Frame: Stainless Steel SUS 202-1.2mm thickness flat or slope type 7) Stainless steel SUS 304 bolts 8) Rubber Components :HTV Silicone Rubber (UV stabilised) 9) Connection Options:22mm OD copper (Europe)