| 摘要 |
A plastic building product comprising a plastic body having a base, an integral continuous wall extending from the base, and a plurality of integral wall segments spaced radially outwardly from the base and defining a space therebetween, a plurality of plastic flange members. Each flange member including spaced integral walls connected by an integral wall. One of the walls of each flange member extending into the space between the peripheral wall and the wall segments of the plastic body.
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