The PAC-CLAD Modular AL wall panel system from Petersen empowers designers to create unique cassette-style metal cladding surfaces using panels of various sizes, depths and multiple colors. Panel dimensions can be standardized, or designers can define panel dimensions and depths to create truly unique, flexible, and eye-catching patterns. Vertical or horizontal panels can be combined in the same layout. Panels can be finished in any combination of the 46 standard PAC-CLAD colors, Wood Grain, Ore or custom colors. Panels can be perforated, including in specific patterns that spell words or form logos. Installation of Modular AL wall panels can be performed on a variety of substrates including plywood, insulation, purlins, or any combination of these.