Venting VELUX Glazing Panels offer several actuator options when specifying the panels. Option one and two have an actuator and crossbar visible from the inside. Option three is only available for triple glazing panels and have a chain actuator hidden in the front cover cap. The design of the panels ensures that there from the outside is no visual difference between fixed and venting panels in a closed position.
As an additional feature, it is possible to convert a rectangular fixed panel to a venting panel by post-installing a visible actuator and a crossbar.