This is Rix 5418006 N Scale Contractor Construction Kit. Building shown has scale of 12A foot tall Office with 20A foot tall warehouse. This kit is designed with cut lines on the back of the walls so you can choose the height of the building. Walls are 24 foot tall, with scale lines cut to produce a 20,16,12, and 10 foot tall building. Side walls and end walls have door and window openings provided. Solid walls have cut lines for door and window openings (optional). Kit includes doors, windows and downspouts. Overhead doors are 10 x 12. Dimensions: 40 x 60 foot scale. Manufacturer: Pikestuff. Model Number: 541A -A 8006. Scale/Era: N Scale. Model Type: Buildings.