compact non-pressure solar water heater. the tank capacity can be chose from 90L to 350L.

1. Inner tank material:  SUS304-2B food grade stainless steel,0.4mm

2. Outer tank material:  stainless steel

3. outer Water tank diameter: 420mm/470mm

4. Bracket: stainless steel,1.2mm thickness

5. Vacuum tube; 47/58mm diameter, 1500/1800mm length

6. Insulation layer: 50-55mm polyurethane foam

7. Obliquity of the bracket: 38degree or 45 degrees

8. Heat preservation: 72-80 hours

9. Hail resistance: 25mm.