Boss Office Supplies B7712-BK High Back Executive Chair / Black Finish / Black Upholstery / Knee Tilt Type: Chairs Color: Natural Sizes/Dimensions: 27W x 29.5D x 45-48H Specifications: Seat Size: 20W x 19.5D. Seat Height: 19 - 22H. Arm Height: 27 - 30H.