Ubbink's felt sleeve and adaptor are used with the UB19 vent to convert the vent to a terminal. The spigot ranges from 100-160mm diameter and be cut to the diameter required.

Ubbink's Vepac and lower pipe connector converts the UB11 vent to the UB39 terminal. The spigot diameter is 110mm.

Ubbink's UB8 connector converts the vent into a UB37 terminal. Diameter of the spigot is 110mm

Adaptor to convert a UB17 Space Salte Vent into a service terminal.