Summer Solar Hot water System ​Model : 180SX (180L) 304L Stainless Steel ​2 x Solar Collector (Titanium Blue Panel) 1 x Pressure Relief Valve ​1 x 3kW Heating Element ​Summer Solar Hot water System ​Model : 300SX (300L) 304L Stainless Steel ​2 x Solar Collector ( Titanium Blue Panel) ​1 x Pressure Relief Valve 1 x 3kW Heating Element read more