A window is an opening in a building or vehicle that allows light and air to enter and exit. Auto glass is a type of window glass that needs to be replaced when it's damaged or broken.
Auto glass works by attaching to the outside of the car or truck and then shattering the window with a Hammer. This action creates a small cut in the glass which then exposes the inside of the car or truck to elements (such as rain, snow, wind, etc). The Auto Glass Repair Center will then go to work trying to fix whatever was done wrong with your window.