Industrial rotary trimmer cuts through up to 20 sheets of standard 20 lb. bond copy paper. Also use to trim cardstock, acetate, cardboard, drafting film, illustration board, leather, black core artist matboard, plastic sheets, laminates, and tissue paper. Self-sharpening trimmer has a fixed housing and does not require replacement blades. Rotary trimmer is specially designed by RotaTrim for medium-volume office and classroom applications and offers extra-rigid guide rails and nylon bearings. Sturdy, 3-1/2" thick, MDF base is calibrated and features preset measurements for common-sized items. Lockable, sliding metal backstop allows multiple same-size cuts. Trimmer also accepts wide-format output from poster-sized inkjet printers.