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Wikipedia definition
1. Quarter glassQuarter glass (or quarter lite) on automobiles and closed carriages 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 or "C-pillar" of the vehicle. Quarter glass is also sometimes called a valence window. This window may be set on hinges and is then also known as a vent window (or windwing).
Read “Quarter glass” on English Wikipedia
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Read “Quarter glass” on DBpedia

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