Freestanding Mail Sorting Systems are used to sort larger supplies of mail center materials, including literature, mail, instruction booklets, forms, and more. Freestanding Mail Sorting Systems are open only in the front, preventing mail and literature from falling out the back. This 150-pocket freestanding unit 18-gauge steel and can be added to workstation tabletops or stand alone. All shelves can be adjusted in 5/8" increments. Units can hold up to 400 lbs. of literature.