Twin flap ventilator
The Duo Therma is a twin flap system suited for both smoke & heat extraction and daily ventilation. This system is certified in accordance with the EN 12101-2 standard, while it is also highly air and watertight. The countless options available in terms of the base and flaps, as well as numerous operating systems and accessories, enable the creation of a functional solution for any type of building: From industrial properties to cold stores, and from commercial centres to theatres and offices premises. The system is also available as a single flap version, which is known as the Mono Therma.