WINDOW OR DOOR SYSTEM HAVING MAIN FRAME WITH INTEGRAL CHANNEL TO RECEIVE COMPONENT OF WALL IN WHICH THE SYSTEM IS INSTALLED

摘要

A prefabricated window system has a main frame which is made from extruded polyvinyl chloride frame portions that are themoplastically welded together. The frame portions have the same cross-sectional configuration. The indoor sides of the frame portions are configured to integrally provide channels for receiving the edges of drywall strips. The window system may be, for example, a casement window system. In another embodiment of the invention a door system includes a main frame which is similarly provided with integral channels to receive the edges of drywall strips.