Slotcar Scenery Building Trackside Billboards 5x SB-1 Total 20 Parts X1 Small Simple Panel: Length: 60mm – Height: 25mm X1 Small Double Panel: Length: 60mm – Height: 50mm X1 Simple Medium Panel: Length: 120mm – Height: 25mm X1 Medium Double Panel: Length: 120mm – Height: 60mm X1 Large Panel: Length: 110mm – Height: 60mm