
Compact sprocket-chain actuator with 150N thrust. Adjustable stroke of 250mm or 365mm in 24V and 230V. Suits top-hung and bottom-hung windows up to 25kg.
- 150N / 15kg
- 250 / 365mm
- 230V / 24V
- Silver, Black, White
- Sync option: No

The actuator sits behind a permanent ventilation flap, keeping the window line clean. A practical choice where appearance matters as much as automation.
Designed around VELUX GGL, GGU and VL window sizes, with brackets and a drilling template included for a straightforward fit.
Zinc housing with a stainless steel chain, electronic disconnection to avoid overload, and a 3000N locking force for secure closure.
Mounting behind a permanent ventilation flap means the actuator is out of sight when the window is closed.
Electronic disconnection avoids overload, protecting both the actuator and the window hardware over its service life.
Zinc housing and stainless steel chain are built for long service with minimal upkeep.
Actuator, upper bracket connecting pack, left and right brackets, fitting and drilling template, safety plate, and an installation and user guide.
CE marked device supplied by Vent Trade as sole UK importer.
Purpose-suited to VELUX GGL and GGU windows from 206/F06 to 810/U10 and VL windows from size 035.
Automated daily ventilation for homes, schools, and commercial buildings. Not for new smoke ventilation systems.
May only be used on smoke ventilation systems as a like-for-like replacement on a previously certified installation. For smoke control products or advice, call us.
Mounts behind a permanent ventilation flap, so the actuator is not visible when the window is closed. Clean sightlines with no surface-mounted hardware on show.
Suitable for VELUX GGL and GGU roof windows from size 206/F06 to 810/U10, and VL windows from size 035.
High locking force holds the window firmly closed against wind load and weather once the chain retracts.
Supplied with upper bracket connecting pack, left and right brackets, fitting and drilling template, safety plate, and installation guide.
We have a team of ventilation specialists on hand to help guide you towards selecting the right actuator for your project.
Call us: 01202 725 485
Email us: info@vent-trade.co.uk