| 摘要 |
A plastic ceiling panel is mounted in a grid of T-rails. The ceiling panel is shaped complementarily to the space defined by facing edges of the T-rails, and includes a central web and sidewalls extending upwardly from the central web. The sidewalls include a lower part that projects halfway across a lower surface of the T-rail, to butt against the corresponding lower part of contiguous panels in spaces surrounding the first panel, so as to give the impression of a continuous, uninterrupted ceiling. The sidewalls are stiffly flexible and are provided with a channel into which the facing edge of each of the T-rails forming the grid space in which the ceiling panel is seated, is received. In installing the ceiling panels, the sidewalls are flexed inwardly enough to permit the wall defining the upper surface of the channel to clear the edge of the contiguous ledge of the T-rail, and released to permit the wall to move outwardly and permit the channel wall to over-lie the ledge of the T-rail sufficiently to support the panel in place. A tab with a hook on its free edge is integral with the panel, and bendable to extend over the vertical stem of the T-rail to insure that the T-rail and panel do not move unacceptably relative to one another.
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