| 摘要 |
A design of a structure for plastic casing to cover a door frame, particularly an improved structure and installation method for the replacement of the casing of the door. The structure mainly uses a front slat and a rear slat to fit together so as to cover up the outer layer of the existing old casing on the wall. The width of the structure can be adjusted to the width of the old casing. Nails can be used to feed through the holding slat for positioning and securing, a plastic cap can be used to cover the ends of the front and the rear slats so as to form a completed ornamental casing, thus saving the time and manpower to remove the old casing as well as preventing the damage from the removal of the old casing. In addition, the decorative assembly gives a strong-binding, secure and practical structure of a plastic casing for a door frame.
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