Woodland Scenics DPM 30174 HO Scale Two Story Wall Sections - Steel Sash Windows 4-Pack Modular Building System(TM) -- Two-Story Wall Sections w/2 Steel Sash Windows - Kit Interchangeable plastic wall sections make it possible to create buildings of any size, shape and height. Build a variety of styles - whatever you want or need. Dimensions: 2 11/16" w x 3 11/16" h (6.82 cm x 9.36 cm) each. White Rose Hobbies is proud to stock Design Preservation Models from Woodland Scenics and other Made in the USA products.