HO Branch Line Roundhouse Kit + 2 Extra Stalls This Detail Associates HO Branch Line Kit # 7001 is a wood framed three stall roundhouse suitable for small HO and HOn3 locomotives up to 50 feet long. Inspired by the Pacific Coast Railway narrow gauge roundhouse at San Luis, Obispo, California, this is the perfect home for your logging, mining and branch line locomotives. The completed model occupies a space approximately 11 inches by 9 inches. This includes a small speeder shed that can be built on the side of your choice. The kit features Kappler die cut milled wood siding, Grandt Line plastic windows and stack vents, Campbell shingles, plus complete illustrated instructions and templates. Also with this kit are two Extra Stall kits to make this a five stall roundhouse. Each extra stall adds about 4 inches to the width of the roundhouse.