Rectangular fire damper CU4

Rectangular fire damper with a 240 minutes fire resistance in concrete walls. BENEFITS Fire resistance 240 minutes FEATURES Suitable for built-in installation 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 Intermediate dimensions on request Suitable for installation in rigid wall