reversible window

reversible window

A window in which the sash may be turned so that the glass surface that normally faces the exterior is turned toward the interior for purposes of cleaning.

vertically pivoted window, reversible window

vertically pivoted window A window having a sash (ventilator, 2) which pivots (usually 360°) about a vertical axis at or near its center; when opened, the outside glass surface is conveniently accessible for cleaning.