Gaugemaster GM491 Relay Boxes (4 Pre-Built OO Scale Boxes).

Relay boxes, also known as relay cabinets, were found alongside the railway tracks. They were used as part of the interlocking systems between track, points and signals and were generally found near station and yard areas.

This pack contains 2 large and 2 small relay boxes. They are 3D printed models made from photopolymer resin. They are pre-painted and can be placed onto your models straight from the pack.

The small cabinet measures 15mm (length) by 5.5mm (width) by 24mm (height). The large cabinet measures 7.5mm (length) by 5.5mm (width) by 24mm (height).