Guide rail is certified in compliance with EN1155, size 3-6. Fulfils barrier-free building requirements (EA / CEN TR 15894). Suitable for fire and smoke protection doors. For single action doors up to 1250 mm wide. DIBt approval with different smoke detection systems. Concealed electro-mechanical hold-open device. Continuously adjustable holding force. Can be used for left and right-handed doors. Closing speed and latching speed adjustable from top facing regulating valves. Hold-open angle continuously adjustable between 70°- 120°. Large range of applications.