HP Auto Duplex Unit Q2439B

BRAND NEW FACTORY SEALED & RETAIL BOXED Automatic Duplex Unit for HP LaserJet 4250/4350 Printers Allows for automatic two-sided print jobs. Media Type : Transparencies, plain paper, recycled paper Media Sizes : Letter A Size (8.5 in x 11 in), Legal (8.5 in x 14 in) HP Part Numbers : Q2439-67901, Q2439A, Q2439B UPC : 00808736305419