What is a Quarter Glass Window? Also called vent windows, the quarter glass window is the last window on either side of the vehicle above the rear wheel. It is not attached to a door and does not roll down like typical car windows, but it may open either manually or electronically by tilting it outward.These windows are typically smaller than their neighboring side window, but can still be quite costly to replace. Quarter glass windows can range from $100 up to $1,000 or more depending on the size of the window.Though these windows don’t take as many direct hits from rocks and debris as your windshield, they can and do become damaged to the point where they may need replacing. Objects that are kicked up from trucks or other vehicles could hit the window and chip or crack it. The weather stripping around the glass may weaken and cause leaks or other damage. Also, acts of vandalism or storm damage can also create the need for a replacement.These windows typically need to be special ordered based on your car’s make and model. Our team at has a large network of suppliers that enables us to get the right type of glass quickly. We can usually schedule your appointment within 1-2 business days, and can come to you to complete the replacement.Ask about our mobile auto glass replacement and repair services that can save you time and hassle.