Windows can make your basement more visually pleasing and improve safety. Large basement windows, sometimes referred to as "egress windows," from Pella of Northern Virginia are built to let more light into underground spaces than the older, smaller, rectangular windows that are put above ground. They also offer an escape in case of an emergency.
The main distinction between basement, or egress, windows and standard windows is that basement windows must be made for an average-sized person to get out in order to meet safety requirements set up in building codes. You are able to select from properly sized casement, sliding or double-hung windows when you add basement windows. Be sure you fully understand local building codes before you purchase basement windows.