Importance

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Abstract

A double hung window assembly includes a rectangular frame formed by a pair of vertical jamb members connected by a horizontal sill member and a horizontal head member. Each of the members comprises a one-piece extrusion of rigid plastics material, and the members are rigidly connected with upper and lower welded mitered corner joints. The jamb and sill members have outer walls for the rough window opening and laterally spaced inner sloping walls which mate at the bottom corner joints. The jamb members also have inner channel walls spaced laterally inwardly of the corresponding sloping walls to define channels for receiving hardware for upper and lower sash frames each including extrusions of rigid plastics material. The one-piece head member has an outer wall integrally connected to a laterally inwardly spaced inner wall and channel walls which mate with the corresponding outer walls and inner channel walls of the jamb members at the upper corner joints, and the inner channel walls of the head member receive the upper sash frame.

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First Claim