| 摘要 |
A shutter adapted to be attached in hinged relation to a frame defining an opening, whereby at least part of the opening may be covered by the shutter, includes a shutter body. The shutter body has opposed top and bottom and opposed side body members, the body members defining a shutter opening. A plurality of movable slats extend horizontally across the shutter opening. The slats are individually suspended and vertically spaced from each other by at least two flexible ladder suspension harnesses. Each harness has two parallel vertical strands with each slat held in fixed relation to a selected location on each of the vertical strands. Lateral movement of the slats is limited by the vertical strands and longitudinal movement of the slats is limited by the side body members. Means are provided to selectively lower and raise at least one of the vertical strands of each harness to rotate the slats about their longitudinal axes.
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