Abstract: Sections of extruded rigid plastics material form a rectangular main frame including a pair of vertical jamb members, a top head member and a bottom sill member connected by welded mitered corners. An extruded plastic astragal member is spaced between the jamb members and has laterally projecting stop portions and internal walls which are rigidly connected by long screws to the head and sill members. A fixed door panel and a pivotal door panel have extruded plastic rectangular frames with welded mitered corner joints and which surround corresponding glazing panels. A continuous gear hinge has an inactive leaf secured to the astragal member and a slightly shorter active leaf. The door panel frames have internal walls which cooperate with the welded corner joints to maintain each frame flat, and long screws positively connect the leaves of the gear hinge to the pivotal door panel frame and the astragal member.

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.

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.