Chain actuators for smoke and heat extraction and controlled natural ventilation are known for their use at the main closing edge for bottom-hung, top-hung and side-hung sashes, whether opening inwards or outwards. The opening width is limited by the provided chain length. With the new bracket set K-K30-ZB, the EA(230)-K-30 chain actuator can now also be mounted on the secondary closing edge.

With the so-called "drawbridge" application, higher opening angles can be achieved by mounting closer to the hinges. The accessory bracket is attached to the standard actuator and uses a deflection guide to ensure that the chain slides out at an angle. This application is only possible for tilt sashes.

You are welcome to check whether this application is the right one for your project with our window calculator. For larger tilt sashes and individual adjustments, we also recommend the use of our slit actuator or the Folding arm².

For more information on the K-K30-ZB bracket for the "drawbridge" application and technical details to download, click here: Bracket K-K30-ZB Drawbridge-application.

Our sales department will be happy to assist you in finding the right product for your application.