... 2. High efficiency 3. Withstands water pressure 5. Electric heater can be used 1500W or 3000W6. Hot water can be used directly, or ... (Dia x Length): 47mm x 1500mm, 58mm x 1800mm.3. Water tank material (inside): Thickness 0.4mm SUS304 2B stainless steel4 ... .7. Frame angle: 25, 38, 45degree8. Hail resistance: 25-30mm9. Heat preservation: 72hours Pressurized Solar Water Heater With Heat Pipe JY-IP200