High-speed electric letter opener machine automatically feeds and opens a 3" tall stack of envelopes at a speed of up to 12,000 No. 10 envelopes an hour. Electric letter opener offers hands-free operation and opens envelopes up to 1/4" thick. Envelopes fall into in a large catch tray. Blades are fully enclosed to protect fingers. Ideal for large businesses and mailrooms. Catch tray can be stored on back of letter opener when not in use. Letter opener features nonskid feet and a power indicator light.