Profile: Airflow Developments Ltd. is a manufacturer of ventilation systems and units. We are an ISO 9001 certified company. Some of our products include heat recovery units, industrial centrifugal fans, ventilation systems and related instruments. Duplexvent 90 SE is one of our ventilation unit product. It is controlled by an intelligent electronic Duplexvent SED control system, compatible with external CO2 and humidity sensors. It is available with energy efficient DC fans and it can be connected for remote monitoring. Double inlet fan is a kind of our industrial centrifugal fan we produce. It features with multivane impellers manufactured from aluminium or mild steel housed in cases fabricated from mild steel. It is equipped with permanent capacitor motors to obtain comparative efficiency, better speed & noise control.