Abstract: Disclosed are novel building face panels, liner panels, wall panels and wall structures made from such panels. The wall panel is made from a face panel metal skin and a liner panel metal skin separated by an insulating core, such as of rigid polyurethane foam. The panels have novel male and female edges which facilitate assembling the panels into wall structures. Fasteners extend through the female edges of the wall panels securing the inner and outer metal skins to a supporting means such as girts thereby holding them together against negative pressure and fire.