... 2.0mm Material Aluminium alloy plate Accessories Workstation system, Electric heater, E-Parts box, thermostat, Switch, Anode magnesium bar ... Φ25mm Balcony solar water heater description:INLIGHT balcony solar water heater composes of balcony solar collector, storage water tank, workstation system ... glass vacuum tubes due to original quality problems Installation photo: INLIGHT Balcony Solar Water Heater