The DC4 model offers a wide range of uses for doors adapting to 150Kg. It is the ideal solution for shops and interior doors of a medium-large size. Optimal adaptation of the closing speed with final blow thanks to two regulating valves. Certificate for fire doors. CE certificate. Strength in 2-6. Door opening from 850 to 1100 mm. Door weight from 25 to 150 Kg. With opening retention.