The Bodyguard Budget Observer Instructor Seat is compatible with Unwin Seat Tracks and complies with EU specifications. It is crucial to obtain an engineer's approval to certify that the floor mounts are suitable for the application. This seat has undergone testing in the UK to meet EU standards, and it is essential for the engineer to confirm that these specifications meet local requirements. Specifically designed for railway instructor use, please note that the color may vary depending on availability.