1) High efficiency solar collector using heat pipe evacuated tubes 2) Able to be used in all climates 3) Copper heat pipes for rapid heat transfer 4) Easy plug-in installation for mounting on the roof or at ground level 5) Suitable for mains pressure water 6) Frame material: 304 2B grade standard steel 7) Collectors may be connected in series to increase water heating capacity 8) Tubes easily replaced if broken