| 摘要 |
<p>A building construction panel having, along a first marginal portion, first and second engaging means, and along a parallel second marginal portion a single engaging means adapted to engage either the first or second engaging means on the first marginal portion of an adjacent panel so that the panels can be disposed in lap or flush relation as desired, one of the portions of each panel terminating at a flange extending outwardly of the panel for use in connecting the panel to a building.</p> |
