Handles large paper sizes up to 13"" x 19"". The Officejet Pro K850dn includes a 150-sheet input tray that can work with all sorts of media types, from envelopes to poster-size paper. Duplexer can print 2-sided posters! The included 2-sided printing accessory can handle page sizes up to 13"" x 19"". If desired, you can remove this accessory and use the straight-through paper path for up to 10 sheets of unusual paper types or up to 76-lb heavy paper stock. Fast printing up to 24 ppm black, 21 ppm color. Enjoy quick, consistent output at speeds up to 24 pages per minute in black and white, 21 pages per minute in color (manufacturer speed ratings). And for richer, crisper output, you can change modes and print up to 7 ppm black, 6 ppm color.