Abstract: A dropglass window module having a sliding pane between a first fixed pane and a second fixed pane, and a skeletal framework comprising left and right division bars, a header and a beltline support where the header and beltline support are each connected to the division bars. The skeletal framework and the fixed panes are bonded together by a plastic encapsulation frame which is preferably injection molded. The fixed panes are positioned entirely within the circumference of the frame. The division bars cooperate with top and bottom segments of the frame to define a central opening, and the sliding pane is movable by a motor between a full open position and a closed position where the sliding pane closes the central opening. In at least some preferred embodiments the beltline support is entirely encapsulated by the plastic frame.

Abstract: A window assembly for mounting in a recessed window opening, especially as the rear window in the passenger compartment of a pickup truck or other motor vehicle, has slidable and fixed positioned panes, preferably right-side and left-side fixed positioned panes with a slidably mounted center pane between them. A mounting frame including a molded plastic, single-sided frame member supports the fixed positioned pane(s) by adhesive surface bonding to a perimeter portion of the interior surface of the panes. The peripheral edge and the exterior surface of the fixed position pane(s) are free of adhesive bonding to the single-sided frame member. The mounting frame also provides an exterior show surface substantially flush with the exterior surface of the fixed position pane(s). The window assembly presents, therefore, an overall flush surface appearance with exposed peripheral edge surfaces of the fixed positioned pane(s).