The SBB acquired over 1,000 open freight cars of the L6 design between 1918 and 1923. They were initially used for transporting coal, but also for other weather-sensitive goods. The L6 cars were built with wooden and steel walls, and with or without a brakeman's cab. Based on the L6, the SBB procured cars with higher side walls for transporting logs and scrap metal. A total of 318 units of the car classified as Fbkk were built. Model features: - New design - Consideration of all design differences - With and without brakeman's cab (L6) - Applied etched parts - Kinematics with NEM coupling mount.