With a sales volume of more than $5 billion, Stock Building Supply is one of the leading suppliers of building materials and construction services to professional home builders and contractors in the United States. It is owned and operated by Wolseley, which has over 5,000 branch operations in nearly 25 countries worldwide and maintains a staff of more than 80,000 employees. Stock Building Supply provides flooring and insulation materials, cabinets, decks, doors, windows, fasteners, and hardware and engineered wood products. It also supplies lumber, molding, plywood, siding, trusses, wall panels and a range of tools. Stock Building Supply sells products under various brands, including Portrait, ProSelect, Smoot and Kitchen Factor. The company offers project estimation, installation, millwork and delivery services. Additionally, it provides construction loans and customer credit through certified lending institutions. Stock Building Supply operates several design centers and maintains a store location in Green Bay, Wis.