This small piece of fixed or pivoting glass sits adjacent to the main side windows, typically near the A-pillar or C-pillar. On older vehicles, they often opened outward to direct fresh air into the cabin. On newer designs, they are usually fixed panels that improve driver visibility or allow the rear door glass to roll down fully by clearing the wheel arch.
Heard on the job
We need to cut the urethane carefully to pull that rear quarter glass without shattering it.
Insider tip
Because they are small and rarely replaced, aftermarket quarter glass can be disproportionately expensive or hard to find compared to a standard door window.
Also heard as
- vent window
- quarter light