PAC corrugated panels provided superior flexibility for use as a wall or roofing panel. For siding applications, one rib is lapped, and in roofing, two ribs are lapped. PAC Corrugated panel has excellent negative load capability even for high-wind pressures. The Corrugated panels can be produced perforated for a variety of exterior projects, such as equipment screens. Perforated corrugated panels are also highly suitable for interior acoustical applications as well. Steel panels may be used on an interior application Only.