Abstract: A tilt window includes a frame with a sill, a header and a pair of jambs, each extruded from rigid plastic material. Each member is formed of multi-hollow construction for overall strength and rigidity. The jamb comprises, in cross-section, a base and an inner leg, an outer leg and center leg projecting from the base to form inner and outer channels. A portion of each center leg and outer leg projects to form a sash engagement panel. The sashes are held within the respective channels by sliding balance shoes and latch members, and may be tilted inwardly away from the sash engagement panels for cleaning.

Abstract: A sliding glass door assembly comprises a frame of rigid plastic, for example polyvinyl chloride, extruded in the form of a plurality of adjacent hollow sections. The upright and horizontal frame members are attached together by screws extending horizontally through the upright members into longitudinally extending screw bosses in the horizontal frame members. The frame members include depending guides for supporting door panels, at least one of which slides open and closed. The door panels are formed of vertical and horizontal sash members which support at least one, but preferably several, glass panels. The sash members are also formed of plural hollow sections that cooperate for strength, and are attached by screw bosses.