EXHAUSTO BESB Box Ventilator is a high-efficiency ventilator with backward inclined centrifugal impellers. It is totally insulated against sound and condensation. The ventilator housing is made of galvanized steel, while the impellers are made of cast aluminum.

BESB is equipped with an energy-efficient, totally enclosed, variable speed motor. A service door provides easy access to the motor and impeller in case service is to be performed at a different location. This also makes for easy cleaning and maintenance.