This Lexmark™ A3 option lets the printer fold papers in different ways without taking up more space through its standing design. Folding patterns include Z-Fold, C-Fold, Envelope C-Fold and Envelope Z-Fold. Can provide Envelope C-Fold and Envelope Z-Fold for up to three sheets at one time for letter and A4. Compatible with all of the Lexmark™ A3/Series 9 printers and options. Accessory Type: Folding Paper Transport Unit; Dimensions: 7.2 x 24.1 x 21.9; For Use With: Lexmark™ CS963e, CX833se, CX833xse, CX961se, CX961tse, CX962se, CX962tse, CX963se, CX963xse; Accepts Paper Size: A4; Letter.