Ideal for occasional small to medium size jobs folding letter-size paper. Automatically folds paper when inserted by hand--even stapled sets. Folds one to three sheets into a letter fold or one to five sheets into a half fold in just seconds. Selector knob makes it easy to change fold type. Easy to remove unlikely paper jams. Non-skid rubber feet keep compact machine in place. Number of Folds: 2 Fold Types: Half Letter for 8 1/2 x 11 sheets only Folder Speed - Sheets per Hour: 2,200.PREP6400. P6400. Martin Yale Martin Yale Model P6400 Desktop Paper Folder.