Quarter glass or quarter life on automobiles may be a side window in the front door or located on each side of the car just forward of the rear window of the vehicle. Only some cars have them. In some cases, the fixed quarter glass may set in the corner of the car. It is also sometimes known as a valence window.
This window may be set on the hinges and is then also known as a vent window. Most often on older vehicles on the front door, it is a small roughly triangular shaped glass in front of and separate from the main window that rolls down. It has hinges and a latch, thus it can be opened for additional ventilation. Most vehicles since the 1960s have removed this feature for cleaner styling, known as “ventless” windows. Some vehicles also have glass that rolls down like regular window or have hinged opening vent quarter windows for rear seat passengers. This may be a side window between the B pillar and the C pillar and in the case of minivans, between the C and D pillars like the Chrysler Town and Country.
They can also be non-movable and mounted