| 摘要 |
<p>The leaf guard attached to a gutter covers the upwardly-opening mouth. The guard comprises an elongated sheet, the outward edge of which is bent into a hooked configuration to engage a co-operating hooked outward edge of the gutter. The inward edge is attachable to or adjacent an inward wall of the gutter. The transverse cross-section of the leaf guard is of saw-tooth profile. The vertical portions of this have perforations. The saw-tooth profile is so oriented that each perforated vertical portion faces outwardly. The inward edge of the leaf guard extends upwardly to constitute a flange formed to attach to the ends of a line of rafters.</p> |
