(57) A window assembly (1) for mounting in a building structure, said assembly (1) including:
- a window sash (20) pivotally mounted to a window frame (10),
- a ventilation opening (9) suitable for air ventilation of said building structure,
- a ventilation opening flap (30) connected with said sash (20) or said frame (10)
and being pivotally movable between a closed position wherein said flap (30) blocks
said ventilation opening (9) and an open position wherein said ventilation opening
(9) is unblocked,
- said flap (30) including a structural part (38), such as a handle, projecting outwards
from said frame (10) in said open and closed positions, said flap (30) connected with
said sash (20) or said frame (10) being movable to said open or closed position from
a first position wherein said structural part (38) projects less from said frame (10).
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