1 Each. Single Tower provides individual storage for personal belongings, defines space and creates privacy in Lorell's Kingsley Open Desking System that maximizes versatility and adaptability. This steel storage unit can be configured for left-handed or right-handed applications with a reversible door that can be assembled for right-handed or left-handed opening. Secure your belongings with the core-removable lock. Inside, the tower includes a hook on the back panel and one adjustable shelf. Use the included shelf clips to adjust the 14-3/4" x 20-3/4" shelf in 1" increments. Welded steel construction with powder-coat finish provides a long-lasting, durable product. Tower also includes a metal handle with a satin nickel finish and four adjustable leveling glides. Use the Single Tower with worksurfaces, credenzas and pedestals (all sold separately) of the Open Desking System for a complete office suite.