This is the left and right side wings of the famous Mannheim locomotive shed. They can be built one behind the other. This kit can be used Two kits are required to build the Mannheim electric locomotive sheds to scale. In addition, three of the #441-66318 Mannheim Electric Locomotive Sheds kits are used for a prototypical structure. This kit consists of laser-cut, colored architectural hard cardstock. It has the finest laser-engraved details. Extensive instructions for building the kit are included. Dimensions of the North and South Workshops Annexes are: 12-3/8 x 1-7/8" 31.4 x 4.8cm.