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WindowMaster Actuators | Chain & Spindle

WindowMaster Window Actuators, Trade Supplied Since 2000

WindowMaster is a Danish manufacturer, listed on Nasdaq First North Copenhagen, with its head office in Denmark and further offices across the UK and Ireland, Germany, Switzerland, Norway and North America. The company focuses on automated facade solutions for natural ventilation, mixed-mode ventilation, and smoke and heat ventilation. Vent-Trade has supplied WindowMaster actuators since 2000.

What WindowMaster Makes

The range covers spindle, chain, locking, louvre and door actuators, wired either on standard 24V circuits or the company’s own MotorLink communication protocol. WindowMaster also supplies the sensors, keypads, break-glass call points and cabling that go with a ventilation control system.

Spindle actuators handle heavier loads, such as large rooflights, but the mechanism can project into the room when the window is closed. Chain actuators suit the same heavy-duty jobs with a neater, less obtrusive look when shut, which is why Vent-Trade stocks both types depending on the application.

Standards and Technology

WindowMaster references EN 12101-2 for its smoke and heat exhaust ventilation actuators, and supports LEED, BREEAM and DGNB green-building assessments with Environmental Product Declarations for its products. Obstacle detection lets an actuator sense resistance and reverse automatically, and actuators can report position and fault status back to a building management system.

Why Buy WindowMaster Through Vent-Trade

Reach for WindowMaster on sustainability-led projects. Its actuators carry Environmental Product Declarations and support LEED, BREEAM and DGNB assessments, and obstacle detection lets an actuator sense resistance and reverse automatically rather than force through it. Both count for more on schools, healthcare and public buildings than on a straightforward commercial fit-out. Call 01202 725 689 or browse the range below.

WindowMaster Actuators We Stock

Chain Actuators
WindowMaster WML 825 concealed chain actuator for VELUX roof windows
WindowMasterWML 825

Concealed chain actuator for VELUX GGL, GGU and VL roof windows. 100N thrust, stroke up to 570mm, 24V. Hidden behind the ventilation flap when the window is closed.

  • 100N / 10kg
  • up to 570mm
  • 24V
  • Grey
  • Sync option: No
Download Datasheet (PDF)
Chain Actuators
WindowMaster WMU 836 surface-mounted chain window actuator with MotorLink option
WindowMasterWMU 836

Surface-mounted chain actuator with micro controller. Up to 300N thrust, 400 to 1000mm stroke options, 24V. Up to four actuators per window with no external sync module.

  • Up to 300N / 30kg
  • 400 - 1000mm
  • 24V
  • Grey
  • Sync option: Yes
Download Datasheet (PDF)
Chain Actuators
WindowMaster WMX 826 programmable aluminium chain window actuator
WindowMasterWMX 826

Programmable aluminium-cased chain actuator. Up to 200N thrust, 50 to 500mm adjustable stroke, 24V. Synchronises up to four actuators with no external module.

  • Up to 200N / 20kg
  • 50 - 500mm
  • 24V
  • Grey, White
  • Sync option: Yes
Download Datasheet (PDF)

Frequently Asked Questions

Where is WindowMaster based?

WindowMaster is a Danish manufacturer listed on Nasdaq First North Copenhagen, with its head office in Denmark and further offices in the UK and Ireland, Germany, Switzerland, Norway and North America.

What is the difference between spindle and chain actuators?

Spindle actuators suit heavier loads such as large rooflights, but the mechanism can project into the room when the window is shut. Chain actuators handle similar loads with a neater, less obtrusive look when closed.

How long has Vent-Trade supplied WindowMaster actuators?

Vent-Trade has stocked and supplied WindowMaster actuators to UK trade customers since 2000.