They are rated from 30 minutes up to 240 minutes fire resistance, as insulated or non-insulated, specifically manufactured to customer dimensions and specification. All doors are made to measure to suit individual requirements and are available for 1 metre to 10 metres wide and 7 metres high as standard. Above that size the doors are subject to special approvals from the BRE. Modern fire roller shutters are electrically operated and can be operated automatically in a fire via simple fusible link and gravity controlled door closing. Electrically operated via key switch or press button to door will function as a security door. Increasing levels of sophistication will provide operation through building fire control systems and deliver high levels of pedestrian security along with warning alarms.
The full specifications are available on relevant datasheets. It is important to note that the preparation of the supporting structure for fire resistant shutters has to be constructed to a strict set of rules as detailed in Hart’s data sheet 600 series and in Hart’s installation guide.
For detailed specification ask for datasheet 600 (Fire Resisting Roller Shutters); 601 (Fire Resisting Roller Shutters UL); 610 (Fire Resisting Roller Insulated Shutters) and 242 (Terror Screen Security Roller shutters with option fire resistance to four hours).