| 摘要 |
The method is for forming a trim molding around a window or door opening defined by a lintel and opposite jambs. L-shaped corner trim pieces and vertical casings and at least one horizontal casing are provided. Each corner trim piece has a vertical leg and a horizontal leg. The vertical and horizontal legs of the trim pieces have a first width and a first thickness. The vertical and horizontal casings have a second width and second thickness. The L-shaped corner trim pieces are located on the jambs and the lintel at the right and left upper corners of the opening. The inner edges of the vertical and horizontal legs are each parallel to an inner edge of the jambs and the lintel. Outer abutment ends of the vertical and horizontal casings are placed in direct abutment contact with the vertical and horizontal legs of the trim pieces.
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