The premium double-track, double-curtain inorganic fire-rated roller shutter is lightweight and insulates well. Its reverse-side temperature stays low and its fire resistance is complete, which makes it a good fit for very large spans and unusual fire-compartment shapes. It also puts less load on the building structure.
Fire-rated roller shutter door
Technical parameters:
– Average temperature rise on the unexposed side: ≤79.6°C; single-point rise ≤113.3°C; fire resistance rating ≥4.0h
– Opening/closing speed: 2–9 m/min
– Smoke leakage: no more than 0.2 m³/(m²·min)
Main technical parameters:
– Fire performance: fire resistance 180 min; radiation heat on the unexposed side 0.61 W/cm²
– Wind-pressure resistance: at 784.5 Pa, mid-curtain deflection 45 mm
– Motor power: 0.25–1.5 kW
– Main power: AC380V 50Hz; control power: DC12–24V
– Average opening/closing speed: 2–9 m/min; gravity descent speed: 4–9 m/min
Control method:
The electric control system accepts on/off smoke and heat-detector signals to close the door, or it links to the fire control center. You can run the door by hand during normal use. In a fire it drops to the midpoint automatically, then continues to the bottom after a delay. During a fire you can press any key to send the door back up; the reverse height and the midpoint dwell time are both adjustable. On request we can add an obstacle-stop safety sensor and a low-temperature (70°C) thermal-fuse device.
Fire-rated roller shutter door classifications:
– Steel fire-rated roller shutter: curtain, rails, bottom bar, lintel, and housing made of steel, with a roller motor and control box, meeting fire-integrity requirements.
– Inorganic composite fire-rated roller shutter: curtain of inorganic fiber, with steel clamps, rails, bottom bar, lintel, and housing, plus roller motor and control box, meeting fire-integrity requirements.
– Premium fire-rated roller shutter: curtain of steel or inorganic fiber, with steel rails, bottom bar, clamps, lintel, and housing, plus roller motor and control box, meeting fire-integrity, insulation, and smoke-control requirements.