The Sentinel D‑Box Twin Fan 100mm (Stock Ref: SENT100T) is a high-performance demand ventilation unit designed for commercial environments. It accommodates duct sizes from 100mm to 500mm, delivering airflow rates between 0.001 and 1.3 m³/s and pressures up to 650 Pa. Equipped with the latest energy-saving EC/DC motors and a lockable isolator, the fan ensures efficient operation and easy maintenance. Constructed from durable Aluzinc, it is suitable for both internal and external mounting. The unit is manufactured under BS EN ISO 9001 standards and performance-tested to BS848 Part 1 & 2, offering reliable and energy-efficient ventilation.