Electric letter opener is designed for high-speed processing of large mail volume. Automatically feeds, opens, and collects a stack of envelopes. Accepts 6" tall stack of envelopes. Operates at a speed of up to 17,500 envelopes an hour. Opens envelopes up to 1/4" thick. Adjustable width accommodates different envelope sizes and types. Electric letter opener comes with removable receiving tray. Ideal for large businesses and mailrooms.