1524mm x 1016mm 60x40 Post, Channel & Pin Board. Visible size: 1524mm x 1016mm. Lockable poster cases supplied with a strong aluminium back panel fixed with sign channel and steel posts and clip sets. This system is secure, waterproof and vandal resistant. Frames are available in various stock finishes. The posts and back panels are a standard grey finish. Pin board available in various felt colours.