Walthers Cornerstone Office and Guard Shack Kit that Requires Assembly HO scale reference Office Building: 4-1/16 x 2-15/16 x 1-5/8" 10.3 x 7.5 x 4.1cm Gate Shack: 3-11/16 x 1-1/4 x 1-1/4" 9.4 x 3.2 x 3.2cm