Shelf divider from Auto-Trail.
These came from a large clearance of Auto-Trail spares
They are a interior cupboard shelf divider with in built LED light.
A strip of flat LED lights mounted at the base of a smoked Perspex, so when illuminated it makes the Perspex glow (See photo 2).
These will be specific shape for Auto-Trail – however as the light is at the base the Perspex can be cut or trimmed down to any size you like.
The highest point measures 577mm
The widest point measures 185mm and the Perspex is 6mm thick.