| 摘要 |
The apparatus includes a frame having a base and two guide posts coupled to opposite ends of the base forming a U-shaped member. The base may be attached to a stock shelf with the U-shaped frame located on the front portion of the shelf. Moveably coupled to the guide posts is a cover panel which may be moved to a closed position covering the space between the two guide posts and to a lower open position or to an upper open position to allow access to the shelf by way of the opening between the two guide posts.
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