1.Door Width:500-1200mm 2.Door Weight:30-65kg 3.Shape:quadrangle 4.Two ... -0 dgrees controlled by two independent hydraulic pressure valves.2. Fine oil seal to prevent leakage.3. High ... of Fire Building Materials. 8. Applicable for wood door,steel door,fire door,etc.9. Colour options: Silver, black, gold, ... Installation types: vertical, parallell, sliding-rail on the door.Scheme of InstallationFunction