Jalousie door

A jalousie door as described, having sections turnable about horizontal axes, the door being formed by a plurality of upper and lower juxtapositioned sections, each provided with an upper edge portion of a stepwise increasing height extending from the outside to the inside of the door, the side of the step facing outwardly forming a chute shaped cavity which is open outwardly and extending along the respected sections, the upper wall forming the cavity being horizontal when in a closed position.