Abstract: The window sash of this invention employs strips of extruded plastic materials which are connected together by mechanical fasteners into an inner sash. The inner sash has barbed protrusions formed on the interior and the exterior which define interior and exterior channels into which wooden or metal trim members may be engaged in snap-fit relation. In operation, individual trim strips are first combined with interior sash elements. These sub-assemblies are then joined with L-shaped injection molded keys. The trim members, plastic keys, and plastic inner sash are then clamped in a frame and stapled together. The exterior sash trim or ring is assembled separately and brought together for assembly with the inner sash. A mastic adhesive is applied to the inner sash, a thermopane window light assembly is disposed on the adhesive, and a bead of adhesive is applied to the rabbet of the exterior ring which is then press-fit into engagement with the inner sash.

Abstract: A glazing system for a wooden door or window employs coextruded vinyl trim strips which have a planar base with flexible compression members and flexible seal tubes and a projecting barb extending from the base. The trim strips engage in kerfs in the window sash and the seal tubes are compressed against the window lights by extruded aluminum trim caps which engage with the trim strip barbs and against the sash. Sashes which have more than one light separated by a wooden muntin are glazed with a vinyl extruded muntin strip which is attached to the muntin so that a flexible seal tube which is a part of the muntin strip base overlies the glass lights on each side of the muntin. An extruded aluminum muntin cap is snap-fit to the muntin strip such that the muntin strip seal tubes are compressed against the window glass. The aluminum muntin cap and trim caps substantially cover and shield the trim strips and muntin strips from exposure to sunlight.