Which glass is typically the one that can move up and down?

• A. Vent Glass
• B. Windshield
• C. Door Glass
• D. Rear Window

Answer: (C)

The moving window in most cars is the one in the door. It sits in tracks inside the door frame and is connected to a window regulator (manual crank or power motor) that raises and lowers it when you use the window switch. The windshield is bonded to the vehicle’s frame and stays fixed for safety and weather sealing, while the rear window and vent window are either fixed or used for limited ventilation rather than the main up-and-down movement. So, the door glass is the one designed to move up and down regularly.