| 摘要 |
An improved thermoplastic door jamb comprises a blown thermoplastic core encased in a non-blown thermoplastic skin. A pair of aluminum reinforcing members are embedded in the thermoplastic core and are positioned and configured to receive fasteners for securing case molding and brick molding to the inside and outside edges of the jamb respectively. The reinforcing members stabilizes the jamb and, in conjunction with the attached moldings, form a rigid stable structure.
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