In large halls and buildings, service work is often laborious due to their size, especially when supplying tradesmen with electricity and water. Creating access points and keeping them open during roof work entails risks such as tripping hazards, water damage and potential damage to access lines. The FDS service port offers an effective solution here. It is a roof duct with integrated electricity and water connections that ensures professional sealing of the building envelope. In combination with the flat roof base, the insulation is sealed so that it is vapor-tight. Thanks to the hinged cover, the service port offers rain and UV protection for the integrated connections.