Ubbink's vepac terminal is an in-line service terminal for use in slated roofs in pitches of 25° and over.
The UB39 is suitable for terminating 110mm diameter mechanical extract systems and soil & vent systems where an external pressure test is not required.
UB39 unit's have a free vent area of 7,800mm² and a pressure/ airflow resistance reading of 19.0 Pascals (reading taken at 100m³/h).