ASSA ABLOY Doorclosers Door closers for every applicationA solution for every door. From the smooth-running Cam-Motion® models to a basic link arm solution. A complete package of surface-mounted door closers. Door Closers for special applicationsAnd maximum comfort and safety Guide-rail systems for single and double leaf fire doorsFor the correct closing of single and double leaf (fire) doors, a wide range guide-rail systems with or without electromechanical hold-open devices and/or coordinators is available. Concealed door closersFor invisible mounting of the door closer. Smooth-running with Cam-Motion® technology. Floor springsFor invisible mounting of glass and heavy doors. Smooth-running with Cam-Motion® technology.