Which cylinder is required? F. Tepaße Updated December 21, 2021 07:11 Follow You need a profile half cylinder 30/10. Total length 40mm. Related articles What are the dimensions of the key switch surface-mounted/flush-mounted? Operating instructions RolloPort coding switch radio Operating Instructions Wall Transmitter 2-Channel RP-SX5-HS-RF11 What are scenes? The RolloTron only moves if the UP or DOWN button is pressed continuously. Why?