Window actuator for VELUX

WML 825

  • Chain actuator for concealed installation.
  • For smoke and comfort ventilation.
  • For VELUX VELUX swing windows GGL, GGU from size F06 and VL from size 033, see instruction for eksakt window type.

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About WML 825

Main features

  • Natural ventilation

    Natural ventilation

    The product is suitable for comfort ventilation to ensure that the building’s users enjoy a comfortable indoor climate

Smoke ventilation

    Smoke ventilation

    The product is suitable for smoke ventilation and use natural driving forces for the efficient exhaust of smoke and heat

Product Details

Smoke ventilation chain actuator for VELUX swing windows GGL, GGU from size F06 and VL from size 033.

The operator can be connected directly to the WindowMaster smoke ventilation control units WSC 3xx and WSC 5xx.


Installation TypeIntegrated
Window typesLouvre
Locking force3000N
Power Supply24 V DC
Colour optionsGrey (RAL 7004)

Delivery includes

Chain actuator with motor bracket, chain bracket, 1.5 m silicon cable and screws.

Intelligent control of windows: MotorLink®

MotorLink® is a communication technology that enables 2-way control and feedback between window actuators and the Building Management System via the MotorController. All WindowMaster control systems are MotorLink® capable with many of our actuators. Click below to learn more and see related products.

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