| 摘要 |
An extruded structural beam having a first member comprising rigid webbing interposed between a top flange and bottom flange. The top and bottom flanges of the first member each have a groove formed thereon for receiving a spline to secure screening material. Similarly, a second member having rigid webbing interposed between a top flange and bottom flange have a groove formed on the flanges for receiving a spline to secure screening material. The top and bottom flanges of both the first member and second member each further comprise opposing longitudinal channels for coupling the flanges so that a rectangular structural beam is formed. The outer surfaces of the flanges each further comprise a longitudinal slot so that a plurality of fasteners can be installed, through the longitudinal slots and flanges to secure the first member and second member together.
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