Abstract: A woodwork includes: a window frame, an outer frame bearing a stained glass window pivotable in relation to the window frame between closed and open positions, and an inner frame bearing an insulating glazing and pivotable in relation to the window frame. An air gap is arranged between the stained glass window and the insulating glazing. The outer frame is mounted mobile with pivoting in relation to the inner frame, with a peripheral seal constituting a sealing perimeter between the outer frame and the window frame. At least two air passages are arranged in the outer frame, one in a lower portion and the other in an upper portion of the outer frame, with each passage exiting in the air gap inside the sealing perimeter so as to place the air gap in communication with the outside free air.