<p>A head rail or head rail assembly for an architectural closure, the head rail including an elongate front wall (85) having left hand and right hand longitudinal ends and an 5 elongate bottom wall (83) having left hand and right hand longitudinal ends. A left hand end structure (31) is positioned adjacent to the left hand longitudinal end of the bottom wall (83) and a right hand end structure (1) is positioned adjacent to the right hand longitudinal end of the bottom wall (83). A first slot (99) is defined between the left hand end structure (31) and the left hand longitudinal end of the bottom wall and a 10 second slot (99) is defined between the right hand end structure (1) and the right hand longitudinal end of the bottom wall (83). At least one of the first and second slots (99) is closed by a removable closure (101). Fig.9. 43 31_ 1285 Fig.10 39 43 -123</p>
