Martin Yale® 1648 Heavy-Duty Automatic Electric Letter Opener Automatically feeds, opens and collects a 3" tall stack of envelopes. Handsfree operation, opens envelopes up to 1/4" thick and collects the cut strips and envelopes in a large catch tray. Blades are fully enclosed to protect fingers. Nonskid feet. Ideal for large businesses and mailrooms. For compact storage, catch tray (attached to back of machine) folds. Gray. Automatically feeds, opens and collects a 3" tall stack of envelopes at a rate of up to 12,000 per hour. Hands-free operation opens envelopes up to 1/4" thick and collects the cut strips and envelopes in a large catch tray. Blades are fully enclosed to protect fingers. Nonskid feet. Ideal for large businesses and mailrooms. Catch tray folds and stores attached to back of machine. Global Product Type: Letter Openers-Electric; Blade Type: Concealed; Blade Material: Steel; Handle