Available in six models, the 6600 Series can adapt to nearly any folding and inserting application. Two, four and six station models are available to meet your particular needs. The 6600 Series offers two output systems: a power stacker, which holds up to 500 filled envelopes, in their original order; and a side exit tray which holds up to 250 filled envelopes. A top-loading evelope hopper is standard, and accommodates up to 500 envelopes. The optional production feeder holds up to 325 BRE's and up to 1,200 sheets of paper.