The RENA Envelope Imager 2.5 The RENA Envelope Imager 2.5 RENA’S Newest High-Speed Tabletop Inkjet Envelope Imaging System Prints 30,000 postcards per hour @ 200 dpi! 2.5” Print Area From Full Independent Heads 64 MB Ram, USB Interface, 133 Mhz Processor Innovative Spotless Transport Rollers Eight Print Qualities Thickness Capability of 1/4” The  Sharpest, Highest Print Quality To Date! Specifications Speed Rating   Postcards 30,000/hr #10 Envelopes 22,000/hr Material Size:   Width 5" - 15" Length 3" - 13.5" Maximum Material Thickness 1/4" DPI Range 150 DPI to 600 DPI Print Heads 5 Banks of Heads 2 Print Area 2.5" Internal Printer Memory 64 MB Cartridge Storage Station Yes Duty Cycle 1,000,000 per Month Printer Life 60 Million Address Interface USB 2.0 & Parallel Dimensions   LxWxH; Weight 19" x 21" x 20.5"; 53 lbs.