| 摘要 |
<p>An insert body used in an existing aperture within a building panel, the body defining an aperture with geometry varied relative to the existing aperture, and comprising an inner surface, an outer surface, a front face and a rear face. The inner surface provides an inner side wall of the aperture to be formed, the outer surface provides for an outer side wall of the aperture to be formed and/or of the existing aperture to be varied. The outer side wall in use is located adjacent to the existing aperture side wall. The rear face provides a support surface for location upon the second face of the panel. The inner side wall terminates in at least one rim on the front face. The front face comprises at least one recessed region and each rim having a surface projected from the recessed region as a reference relative to the first face.</p> |
