A composite wall panel having continuous upper and lower hollow horizontal chases and spaced hollow studs forming vertical chases throughout the panel to permit passage of electrical wiring and the like. The chases have protective barriers to protect the wiring from penetration and damage due to mechanical fasteners used to manufacture the panel and to construct load bearing walls using a plurality of manufactured panels. Further, the panel has a continuous header to provide structural rigidity and to permit rapid manufacturing of the panel without the need to frame openings, such as doors and windows, at the time of manufacture. Openings are cut in the panels and finished after the walls are constructed. Even further, the panel has horizontally extending brackets which laterally support the studs.