Electric letter opener is designed for high-speed processing of large mail volume. Ideal for large businesses and mailrooms. Letter opener automatically feeds, opens, and collects a stack of envelopes and accepts a 6" tall stack of envelopes. Operation speed is up to 17,500 envelopes an hour. Adjustable width accommodates different envelope sizes and types. Electric letter opener opens envelopes up to 1/4" thick. Receiving tray is removable to save space when not in use.