Elk Grove Village, IL - Petersen’s new PAC-4000 metal composite material (MCM) provides design options for those wanting to add truly flat, colorful surfaces to building exteriors. The material is resistant to fire, impacts and water intrusion, and can be curved for aesthetic appeal. PAC-4000 is designed for walls, canopies, fascia and accents on all building types including hospitals, office buildings, retail, educational facilities and many more.