| 摘要 |
The material for door frames is designed to have side walls (4) inwardly bent and reinforcing partition walls protruding from the rear of the front face plate. The walls are, for their firm spacings, fitted with fixing members (8) having grip openings (9) and reinforcing supports (11). Two pieces of the material (1) are joined with miter joints (12) to be filled with hardening agent such as cement mortar or plaster for firm installation. The present product presents a good appearance of a plastic resin form material with the strong structure of concrete with the hardening filler for easy installation at site.
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