| 摘要 |
A millwork building construction member of rabbeted construction such as a doorjamb which includes a core to which a thin bendable exterior skin is bonded. The core is a non-lumber wood material such as composition board that has been folded after V-shaped grooves have been cut and the skin has been affixed. The skin is thus wrapped around the folded core to form the exterior surface of the member, while a cavity is defined that extends longitudinally through the core. The cavity can be filled for added strength. The skin may be selected for its decorative or fire-retardant properties.
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