Features:
1) Tube size (D*F): ¦µ47*1500mm, ¦µ58*1800mm.
2) Reliable and efficient with twin-glass solar tubes.
3) Easy plug-in installation.
4) Outer tank material: SUS304 food grade stainless steel or powder coated color steel sheet.
5) Inner tank material: SUS304 food grade stainless steel plate, the thickness is 0.4mm\0.5mm\0.6mm.
6) Bracket material: Stainless profiled SteelSteel with surface plastic painting.
7) Heat Preservation layer: 55-60mm improved polyurethane integral foaming, superior heat preservation.
8) Temperature when exposed to sun without water: 250, 2.5 hours to boiling if using single tube.
9) Absorb rate: =93%, thermal radiation rate: 6% (100).
10) Optional Electric Heater: 1500w/3000w.
11) Resist 25mm hail, using life can last 15 years.
Compact non-pressure solar water heater.