19 Non-metal windows and window assemblies comprised of frame, sash, fasteners, handles, knobs, and glass panels and replacement parts thereof; non-metal patio doors, gliding doors, exterior doors, and door assemblies comprised of frame, fasteners, handles, knobs, and glass panels and replacement parts thereof; non-metal window and door hardware, namely, sash fasteners, handles, and knobs; non-metal grilles for use with windows and doors; window glass and panes; stained glass, art glass and decorative panels; non-metal window and door screens; decorative window panels with metal frames