Ventilation grilles for spiral ducts are designed to supply or exhaust air circulating in spiral ducts. They are made of shaped aluminium profile and tear drop shaped adjustable blades allowing air flow control. ­For air flow rate control, the grilles are equipped with a control section (CS) and an additional deflecting section (DS).

Ventilation grilles for spiral ducts have flangesthat, when fitted, meet flush to the duct regardless of its diameter. When ordering such type of ventilation grilles please specify the duct diameter. The minimum diameter for which we produce such grilles is 150 mm, and the maximum one is unlimited.



Prices and dimensions