Martin Yale P6400 Desktop Letter Folder; Folds Up To 36 Letters a Minute, 2200 Sheets an Hour; Hand-fed, Folds 1-3 Sheets and Accepts Stapled Sets Hand-fed machine folds 1 to 3 sheets into a letter fold or 1 to 5 sheets into a half fold in just seconds. Folds up to 36 letters a minute, 2, 200 sheets per hour For use with 8 1/2 x 11 Inches paper, 16-24 lb. bond This machine can only fold regular paper, it cannot fold glossy paper Automatically folds paper when inserted. Accepts stapled sets