DC 840 Cam Action ASSA ABLOY DC 840 Concealed door closer with Cam-Motion® technology and small standard concealed guide rail G892 or standard concealed guide rail G893 Fulfils barrier-free building requirements (DDA / CEN TR 15894) Certified in compliance with EN 1154, size 1-4 Suitable for fire and smoke protection doors For single action doors up to 1100 mm wide Characteristics Can be used for left and right-handed doors Closing speed and latching speed adjustable from top via regulating valves Built-in backcheck Thermodynamic valves for consistent performance Opening angle up to 120° Large range of applications Versions with 4 mm and 8 mm spindle extensions Standard colours: silver EV1 Customised finishes available on request DC 860 Cam Action