... service time. Model Number: SpecificationΦ400, Φ410, Φ420, Φ430, Φ445, Φ450, Φ460, Φ470, Φ480, Φ490,Φ500,Φ520(mm) color according to ... need.5 Safe and reliable.6 High strength of materials. 450-480mm Solar water heater outer tank Galvanized Cover