Egress window: Is a window large enough that is required in specific locations in a dwelling and is intended to provide an emergency exit. Windows must meet specific building codes, size and requirements.
E-Value: the reflective value of a window to help prevent heat from escaping and reflect long-waveheat energy, the lower the value, the better the insulating quality of the material.
Extension Jambs: Flat parts made of wood, or other materials which are attached to the inside edges of a window to fill the space between the window and the interior molding.
Eyebrow windows: is rectangular on the bottom and slightly arched on the top.