Window or sash which is non-operative or non-venting.
A pane of glass installed directly into non-operating framing members; also, the opening or space for a pane of glass in a non-operating frame.
This is a non-opening window or pane.
A steady, non-flashing beam.
A thick glass, usually circular in shape, fitted in a frame fixed in an opening in a ship's side, deck house or bulkhead. The fixed light is not provided with hinges and serves only to provide access for light.