With the outlet locations and sizes determined we make up a system design for the ducting to be installed in the roof space. We use advantage air ducting and exact air regulators to re-direct the air to the outlets as required. The Exact Air Regulators utilise opposed blade dampers which provide steady airflow and are operated by efficient 24v DC motors. The dampers open from close to fully open in 5% increments providing precise airflow control to each zone.