High-speed, electric letter opener automatically feeds & opens a 5" tall stack of envelopes at a speed of up to 12,000 No. 10 envelopes an hour. Ideal for large businesses & mailrooms. Electric letter opener offers hands-free operation & opens envelopes up to 1/4" thick. Envelopes fall into a large catch tray. Blades are fully enclosed to protect fingers. Cut width is 1/8". Catch tray can be stored on the back of the letter opener when not in use. Letter opener features a power indicator light & nonskid feet so the opener stays in place.