Opening damper DC157 Helps to prevent the door and door handle from hitting a return wall. Simple fitting into guide rail. Opening damper continuously adjustable up to an opening angle of max. 110°. Does not replace a door stop. Specifications Type of product Opening damper Close Hold open device DC152Hold open device for doors, installed in sliding arm. Link arm DC198Extended link arm for door closers. Suitable for fire doors. Mounting plate DC130Mounting plate for door closers.