(2) of the hinge.a space (18), open size to that of the thickness of one or two fingers of a human hand in order not to constitute a danger for the user if they form one or more fingers within the saidspace during the operations of opening, closing or extraction of the door....
So handing in this case specifies which side the hinge is located on. they are called FCL when the hinges are located on the left side of the frame and FCR for when they are located on the right side of the frame. With the graphic representation of a casement the hinged side is ...
the hinge on an FCR window is on the right. Similarly, FCL windows must have hinges on the left side of the pane. Moreover, they can be termed as a right-hand crank or left-hand crank
HandingA term used to describe the right or left hand operation of a window or door. Head JambThe top member of a frame. HeadboltA locking rod device installed vertically in the stile or astragal of a door or screen which when activated secures the door in a stationary position. Historical...
side of moving part (2) of the hinge a gap (18) having dimensions greater than the thickness of one or two human fingers so as not to pose a risk to the user when the latter inserts one or more fingers into such gap during the operations of opening, closure or removal of the door...