Circular fire damper CR2-L500

CR2 damper with a tunnel casing extension at the wall side to facilitate the connection to the duct when the supporting construction is thicker than 100 mm. BENEFITS Large dimensions FEATURES Suitable for built-in installation Minimal distance allowed Suitable for rigid wall, rigid floor and light wall (metal stud gypsum plasterboard wall, gypsum blocks) Sealing with fire resistant stone wool boards allowed, also for asymmetric opening Air tightness in accordance with EN 1751: class B (class C in option ) Tested according to EN 1366-2 up to 500 Pa Operating mechanism outside the wall Maintenance-free For indoor use Operating temperature: max. 50°C