EN12101-2 Sloping Roof Vent Bottom Hung AOV
Fully tested and certified bottom hung automatically opening smoke ventilator CE marked to EN12101-2 for use in sloped atria glazing.
Linear actuators are more commonly installed. Any motor specified must provide sufficient power to support the maximum load that occurs when the window is opened fully. Chain actuators can be used but great care must be taken specifying a suitable force. Operating conditions must also be addressed (i.e. wind & snow etc.)