A concealed hinge for a turn-tilt window with a fixed frame and a leaf is provided with a scissor mechanism with a main arm having at a first end a hinge for fastening the concealed hinge to the top of the leaf, and is hingeably connected at a second end to a scissor hinge that is intended for the connection to the frame. The scissor hinge is composed of two scissor arms that are hingeable with respect to one another in such a way that the concealed hinge can be folded up. The main arm and the scissor arms extend above one another and parallel to one another in a horizontal direction. In the folded-up situation of the concealed hinge, when viewed vertically the main arm, with a section at the second end, is located above at least one of the scissor arms of the scissor hinge.

The main door for the control of the access opening to a compartment, particularly a garage compartment, comprises: a fixed portion associable with the access opening of a compartment; a mobile portion including a leaf associated in a mobile way with the fixed portion; at least a pulley on which winds up a cable connected to the leaf and to a counterweight; an operating shaft of the pulley mounted on the fixed portion; a winding-unwinding device having a flexible element which can be wound and unwound which is associated with the top of the leaf; an electric motor mounted on the fixed portion and suitable for placing a driving shaft in rotation; and a transmission and distribution having a first electromagnetic clutch to transmit motion from the driving shaft to the operating shaft and a second electromagnetic clutch to transmit motion from the driving shaft to the winding-unwinding device.