PandaSolar PD-MRS-HB is Metal Roof Solar Mounting Systems with Hanger Bolt bracket fix, mainly for solar panel mounting brackets for metal roof, for corrugated metal roof solar mounting system. Product Details Name:  Metal Roof Mounting System Hanger Bolt Solar Mounting Brand:  PandaSolar Item:  PD-MRS-HB Product Origin:  Fujian, China Material:  SUS304+AL-6005-T5 Surface Treatment:  Anodized Warranty:  12years Duration:   25years Shipping Port:   XiaMen Port