SUNBREEZE® CAMBRIDGE Window Walls are available as Base Units (the window wall), Corner Units, Door Units, and Extension Panels. They may be assembled next to each other in any combination, to create any length wall. Simply add the widths of each unit to determine wall length. There is no need to fumble with rough opening measurements. All units come with attachment hardware and trim nails. All Base Units, Door Units, Corner Posts and Extension Panels are structural and load bearing, have a built-in wire chase at the basewall and head jamb, a tongue and groove attachment system for precise alignment. The interior features the natural beauty of wood with a complete pre-sanded and pre-cut solid cedar trim package.