ClarkDietrich® is the leading manufacturer of a full line of drywall studs and accessories, structural studs and joists, metal lath and accessories, shaft wall studs and track, interior and exterior finishing products, and connectors and accessories for commercial and residential construction. Quality manufacturing, a full-line offering, national distribution, engineering services and responsive customer service position ClarkDietrich as the largest manufacturer of cold formed steel framing in North America. Clarkwestern Dietrich Building Systems is a 75/25 joint venture with Marubeni-Itochu Steel America Inc. (MISA) and Worthington Industries, Inc.