French Door: A vertically split hinged door. Both sides open seperately from each other.
Glazing: The material that is sealed into a frame. This could be any type of glass, Lexan, aluminum or steel.
Laminated Glass: Regular glass bonded together with Polyvinyl Butyral (PVB). If broken the PVB holds the glass together to reduce injury.
Lexan: Lightweight plastic that does not break as easily as glass. Available with a scratch resistant coating.
Mitred Corner: An angled corner formed by cutting and welding each leg of extrusion on a window.
Radius Corner: A rounded corner formed when the window extrusion is bent in a bending machine.