The Model 2051 Paper Folder is capable of handling 18-lb to 90-lb bond paper. It has variable speed control, allowing you to adjust the motor speed from 3,000 to 15,000 sheets per hour. It can handle paper up to 12 x 18-inches big! The paper hopper can hold up to 500 sheets of paper. An on-board computer has seven preset folds and allows you to create up to 10 additional custom folds.