The RENA Envelope Imager 1.5 Plus The RENA Envelope Imager 1.5 Plus RENA Desktop Inkjet Envelope Imaging System Fast  – Offers print class-leading speeds up to 33,000 postcards per hour Tough – Runs 1/4” thick material and is engineered for years of trouble-free operation Affordable  – Production speed and Rena quality at a price that fits your budget Intelligent  – RENA JETMate Envelope Imaging Software included making designing and printing envelopes easy! Specifications Speed Rating Postcards 30,000/hr #10 Envelopes 22,000/hr Material Size: Width 5" - 14" Length 3" - 14" Maximum Material Thickness 3/16" DPI Range 150 DPI to 600 DPI Print Heads 3 Banks of Heads 1 Print Area 1.5" Internal Printer Memory 64 MB Hopper Capacity 500 No. 10s Duty Cycle 750,000 per Month Printer Life 45 Million Address Interface USB 2.0 & Parallel Dimensions LxWxH; Weight 19" x 21" x 20.5"; 53 lbs.