Based on the Saxby and Farmer design seen on many railways across Britain. Footprint: 90mm x 56mm + 40mm over staircase. The Ratio Signal Box Interior kit 553 will provide a wealth of interior detail. Don't forget SS89 Point Rodding, SS22 Lamp Huts and, of course, signals! Supplied with pre-coloured parts although painting and/or weathering can add realism; glue is required to complete this model.