Circular fire damper CR120-L500

CR120 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 Easy to install Optimal free air passage and minimal pressure loss Optimal acoustic performance Higher net building volume through compact size Air-tightness class C according to EN1751 FEATURES Suitable for built-in installation Suitable for installation remote from the wall Minimal distance allowed Suitable for rigid wall, rigid floor and light wall (metal stud gypsum plasterboard wall) Sealing with fire resistant stone wool boards allowed, also for asymmetric opening 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