Chicago Lumber Company is one of the oldest and largest lumber companies throughout the industry. With more than a century of presence in the industry, the company operates a large retail and wholesale operation from its headquarters in Omaha, Neb. It also operates 10 other lumber yards and building centers throughout Nebraska and Wyoming. Chicago Lumber Company offers more than 11,000 standard-sized windows and features Marvin and Roto products. Chicago Lumber Company also partners with Therma-Tru Doors, a company that revolutionized the door industry more than 30 years ago. It also offers Larson Doors products.