| 摘要 |
A unitary framing assembly for use in framing an aperture in a wall or a roof, ordinarily a window aperture, has important features which enable its easy installation and yet which provide a superior weather seal. These features include the rout in the outer edge of the molding of the window unit, an intrinsically L-shaped or F-shaped polymeric preformed weather/nailing flange (preferably molded or vacuum formed) which is positioned within or adjacent said rout, prelocated nail marks, centering lines on the uppermost surface of the jamb for centering the window unit during installation, and associated interior trim pieces with incorporated stop structures.
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