Roof panel made of synthetic material.

摘要

A rib (3) protruding downwards runs along the curved bottom edge of the tile (1,2), while the thickness of the top edge is less than the width of the undercut in the boss. The bottom wall (11) of the groove (7) is at a distance from the top edge equal to that between the ridge and the rear end of the undercut (6). The width (b) of the groove can be less than the depth of the undercut.