Walthers Cornerstone # 933-3160 Centennial Mills Background Building KiThe Walthers Cornerstone Centennial Mills Background Building is typical of concrete industrial buildings found in manufacturing districts in cities across the continent. This thin-profile Background Building is designed for use between your rear tracks and painted or printed backdrop to create a realistic transition from layout to background. A covered loading dock, fire escape ladder, wall-mounted dust collectors, colorful decals and complete instructions round out the Centennial Mills Background Building kit. As shown, the kit measures: 10-3/16 x 1-15/16 x 8-7/16" 25.4 x 4.8 x 21cm