| 摘要 |
A screen element (2) of a screen (1) comprises transverse sides provided with at least one projection (6) and/or at least one recess (7) for locking engagement, in a direction transversely to the plane of the screen element, with a corresponding projection and/or recess on neighboring screen elements arranged in a screen frame (4). The projections and/or recesses are arranged so that the screen element when rotated half a turn has the same circumferential shape. The screen element has an undercut groove on its underside for snap locking to the screen frame. |
