Laser cut wood framing, laser cut board and battens for the siding, in fact 98% of the kit is laser cut and makes building this kit real easy and less time consuming AND the parts fit!! The basic kit includes 3 stall and you can add as many stalls as you wish. Included are inspection pits for each stall.This kit is designed for HOn3 narrow gauge. Footprint is 10 1/2" deep, 6 1/2" across the front, and 10 1/2" across the back.