Stainless steel inner and outer tank
Polyurethane insulation layer from Bayer (Germany)
1.2mm Stainless steel frame
SUS3042B Food grade stainless steel inner tank
Magnesium Anode per-installed in tank
Optional Electric Stainless steel heating element (1,500W)
Vacuum tunes with borax and silica glass, heat absorption rate>93%
Vacuum Tube life span of minimum 15 years
Frame is 30o