Damper with a tunnel casing extension at one or both sides so that the damper blade does not exceed the tunnel. This version allows to connect a grill or a bend directly on the damper flange. 

• 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 temperture: max. 50ºC
• intermediate dimensions on request

CU2L CFTH: CU2L with CFTH mechanism. It unlatches the damper blade when the temperature in the duct rises above 72ºC. The damper can also be unlocked and reset manually.

CU2L ONE T: CU2L with ONE T. The spring-return actuator ONE is designed to easily operate fire dampers automatically or remotely.

When powerd, the actuator moves the damper blade into its stand-by position (opened). when power is interrupted or when the temperture in the duct exceeds 72ºC, the internal armed spring brings the damper blade back into its safety position.

An integrated LED indicates the open or closed position of the motor. The (included) beginning and end of range switches indicate the position of the damper blade (on a control panel). 2 models are available: 24 or 230 volt.