With a robust structure and reliable chain transmission, this product is an economical choice for natural and smoke ventilation.
Chain box with standard and opposite hand directions available ,
Universal joint, operable in all directions,
1:3 gear ratio in the driving unit to enable speedy opening
Foldable driving handle,
Optional driving arm available,
Easy to install,
Suitable for various window types.
100-1,000mm (above 400mm pull only)
Powder coated RAL 9006
>2,000N(based on manufacturer’s bracket)
2.2 kg (500mm stroke)