PECO Lineside Kits N\nTunnel Mouth, Single Track\nPair of detailed Tunnel Mouths, with separate wings walls for optional positioning. Matching Stone Walling is also available (NB-40). Technical Specification:\n--Width: 35mm\n-- PECO Streamline and Setrack N Gauge Code 80 and Code 55 trackage systems\n-- PECO N Quality Line Wagons