Look here at all Ubbink roof terminals with a diameter of 131mm! In addition to ventilation pipes, we also offer handy accessories from Ubbink. Think of roof plates or roof tiles to connect the pipe to a sloping roof. In addition to ducts for pitched roofs, there are also ducts for flat roofs. You can choose from the Ubbink Multivent, Ventub and Ubvent! These roof penetrations are suitable for a duct with a diameter of 125mm if you use a plug-in connection.