COLLECTOR Quantity:2 piece 188 series collector Dimensions: 1930 x 930 x 100 mm Weight: 33.5 kg Absorber Plate: Copper or Aluminium Glazing: Solar or Normal glass Insulation: Glasswool or Polyurethane Sealant: EPDM Case: Aluminium Connection: ¾" BOILER System: Closed Loop Thermosiphon Dimensions: 1770 x Ø540 mm Weight: 90 kg Working Pressure: 6 bar Test Pressure: 12 bar Insulation: Glasswool Outer Coverage:Galvenized or Stainless Steel Thermostat Resistor: 2000 W Corrosion Protection: Cathodic Protection and Hot Deep Galvanizing