| 摘要 |
A roller shutter for protecting doors and windows during high wind conditions wherein a fenestration frame 18 is secured to the header 10 and sill 12 of the building. A spindle 38 is rotatably mounted in a box 28 and one edge of a fabric sheet 40 is attached to the spindle. When the spindle is rotated, the fabric sheet is coiled or uncoiled around the spindle so that the fabric sheet 40 is extended or retracted across the fenestration member.
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