Ventilation passage and air duct are used in this case and use of such air duct as a ventilation duct.

摘要

Ventilation passage for the passage of ventilation air between two chambers separated by a wall with a door with a door frame built into a wall (18) in a doorway (17) and composed of a door frame (23) with a lintel (24) and a door frame (25) with decorative strips (26) on both sides of the wall (18), characterized in that the ventilation duct is formed by air cooking (14) which bridges the thickness (E) of the wall (18) and which is located above the door (12) between the door frame and the upper side (21) of the door opening (17) and which is provided with an entrance (19) and an exit (20) each on a different side of the wall (18) in a gap (29) between the upper decorative strip (26) of the door frame (25) and the wall (18).