The IM4500 is an in-line pressure seal machine which connects directly to the back of many HP and other brand high speed laser printers for automatic processing. It allows you to print ‘n mail in one easy step. Imagine the time savings it will offer you! Processes up to 3,300 forms per hour with a monthly duty volume of 50,000 pieces. It features an automatic by-pass tray which kicks out double feeds so the machine can keep operating. Plus a manual feed slot for pre-folded forms which still need to be sealed.