| 摘要 |
A truck van includes a floor bed, vertical corner posts projecting upwardly from the floor bed, a front wall secured to the front corner posts, a roof mounted atop the posts, vertical rollers mounted adjacent the corner posts, an endless web disposed about the rollers and in snug contact therewith, an access aperture formed in the web and arranged to afford access to the interior of the van from the rear or from either side thereof.
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