| 摘要 |
The door (5A) comprises rigid articulated planks (6A). Guide rollers mounted on the lateral edges of the door engage spaced guide rails integral with a fixed frame. The planks can be moved in the rails between a vertical closed position and a horizontal open position. There are also roller supports (36A,37A) for the door planks when in the horizontal position which are integral with the frame and located between the guide rails.
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