
Window Master WWS 100

WindowMaster WSK 397 Replacement Breakglass (Pack of 5)

WML 825 for VELUX Windows
- Colour/Finish
- Grey
- Max Current (amps)
- 1

WMU 836 03 for VELUX Windows
- Stroke (mm)
- 600
- Max Force (N)
- 300
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 1

WMU 861 – 600N Chain Actuator
- Stroke (mm)
- 300, 500
- Max Force (N)
- 600
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 1

WMU 862 – 600N Chain Actuator
- Stroke (mm)
- 300, 500, 600, 750, 1000
- Max Force (N)
- 600
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 2

WMU 863 – 600N Chain Actuator
- Stroke (mm)
- 600
- Max Force (N)
- 600
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 3

WMU 864 – 600N Chain Actuator
- Stroke (mm)
- 750, 1000
- Max Force (N)
- 600
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 4

WMU 882 – 1000N Chain Actuator
- Stroke (mm)
- 300, 500, 600, 750
- Max Force (N)
- 1000
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 2

WMU 883 – 1000N Chain Actuator
- Stroke (mm)
- 300
- Max Force (N)
- 1000
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 3

WMU 884 – 1000N Chain Actuator
- Stroke (mm)
- 500, 600, 750, 1000
- Max Force (N)
- 1000
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 4

WMU 885 1000N Chain Actuator
- Stroke (mm)
- 750, 1000
- Max Force (N)
- 1000
- Colour/Finish
Anodised Aluminium
- Max Current (amps)
- 5
About WindowMaster
Rocburn has been a trusted UK WindowMaster partner since 2012, supplying the full range of WindowMaster actuators, control panels, switches, and ventilation systems for both natural and smoke ventilation projects.
WindowMaster, established in 1990, designs and manufactures high-quality, energy-efficient ventilation solutions. Designed in Denmark and made in Germany, their systems deliver intelligent, sustainable climate control for commercial and residential buildings.

