High capacity trimmer that cuts matboard! Ground circular blade enclosed in a plastic housing. Self-sharpening blade cuts in either direction. Automatic see-through paper clamp. Metal base with preprinted guides. Inch and metric measurements with metric sizing grid for precise cuts. Thick walled aluminum guide rod. Adjustable backstop fits on either side. 440 and 442 cut up to 30 sheets of paper at a time. 444 cuts 25 sheets, 446 custs 22 sheets and 448 cuts 20 sheets. Can be wall mounted. Optional floor stands available (models 446 & 448 only).