About Mayline Mayline Company was founded in 1939 under the name Engineering Supply Company. The company proved to be an expert in the manufacture of drafting tables, blueprint files, and straightedges. During the war years, Mayline provided highly accurate navigatonal and mapping accessories for all branches of the military. Though still a market leader in manual drawing and large format filing, Mayline has moved to the forefront of office ergonomics. Mayline offers the market"s largest and most diverse selection of manual-assist, counterbalance, and electric sit-to-stand workstations found anywhere. Mayline is located in Sheboygan, Wis. * Mid-back office chair in black * Durable steel frame construction with adjustable arms * Upholstered in a combination of durable leather and mesh * Cast aluminum base in chrome with dual hooded casters * Pneumatic seat height adjustment with center pivot * Manufacturer provides limited lifetime warranty * Back dimensions: 19.5W x 19H in. * Seat dimensions: 19.5W x 17.5D in. * Overall Dimensions: 26.5W x 26D x 38.5 - 43H in.