Stienen BE supplies smart, compact ventilation chimneys for air intake and exhaust. The ventilation chimneys seamlessly fit the AQC measuring and control units and SGS fans. When assembled together into one system, they are sturdy and they can be installed quickly. To save on transport costs, the chimneys are supplied with a coupling strip. This enables them to be assembled at the project site. To prevent condensation, this ventilation chimney is also suitable for double-walled application. The sturdy doublewalled structure with an 8mm air cavity between the inner and outer walls ensures an insulation value of 2W/m2K.