Features: 1) High efficiency solar collector using heat pipe evacuated tubes 2) Able to be used in all climates 3) Reliable and efficient with twin-glass solar tubes 4) Copper heat pipes for rapid heat transfer 5) Easy plug-in installation for mounting on roof, balcony or at ground level 6) Free maintenance 7) Suitable for pressure water (8 bars / 116PSI) 8) Corrosion resistant silver brazed copper header 9) Frame material: 304 2B grade standard steel 10) Casing material: 304 BA or AB stainless steel 11) Excellent insulator in polyurethane foam 12) Collectors be connected in series to increase water heating capacity 13) Tubes easily replaced if broken, can be used with broken tubes 14) Ideal for commercial solar water heating applications 15) Can be installed on the balcony or windows Yaning