... competitive price. 3. color, drive mode is optional. steel fire resistance roller shutter Fire resistance period: 1- 5 ... Factory, Machinery Rooms, Hospital, Schools, Hotels, Council Buildings, Record and Document Stores, Dangerous Goods Stores, Shopping ... 310 minutes fire.Materials and Finish:Zincalume Steel, Galvanised Steel, Electro Galvanised Steel, Prepainted (Colourbond) Finished or Optional ...