Medium Interlocking Sign Channel or sign joining rail is a great solution for creating a butt joint between post mounted sign panels. Used extensively in the road sign and highway sector, the medium interlocking channel is suitable for permanent road sign installations.

The interlocking aluminium extrusion is designed to be fixed to the reverse of aluminium or aluminium composite (ACM) sign blanks. The channel allows the blanks to be fixed to sign posts, railings or uprights without the need to fix through the face of the sign. The unique male and female tongue and groove design allows the interlocking channel to effectively reinforce sign blanks that are tiled together to create a larger overall sign.