SBF also supplies ventilation systems with hot and cold air. These are designed and produced either as a closed system or integrated into the ceiling system. In the latter case, the ceiling systems are constructed such that they form a supply and an exhaust air duct in combination with the carriage shell construction. The covering panels are perforated and thus guarantee the appropriate air change. Moreover, the air ducts and their connection to the carriage body are thermally separate and flow-optimised.
