You are looking at a TT120 Gauge Canal Lock with Gates - this item is modular, each piece is separate so if you want a shorter lock you can remove one of the pieces. It will require gluing together, finishing and painting.
Small Girder Bridge TT120 Gauge Model Railway Supports Brick Stonework Detail
Girder Bridge TT120 Gauge Model Railway Bridge Support Girders Stonework Piers
TT120 Hornby TT8036 Fishplate Pack - Spare Parts and Train Accessories for Hornby TT Gauge Model Railway Sets, Coupling and Modelling Tools - 20 x Fishplates - Scale 1:120, Silver
