... .Simple installation 4.Anti-freez,No maintenance Balcony Solar Water Heater, Technical Parameters: Heat Pipe Solar Collector Spec.(mm) Φ47×850 Φ58×850 Tube ... .0 bar Hail Resistance Φ25mm Balcony solar water heater description:INLIGHT balcony solar water heater composes of balcony solar collector, storage water tank, workstation system, accessories and interconnecting ...