Large offices and facilities that are constantly folding large quantities of paper should only be using heavy duty paper folders. Heavy duty folders are bigger, faster, and have higher outputs than smaller folding machines. For any job that folds fewer sheets less frequently, the low to medium duty folding machines should be used. Heavy duty paper folders fold thousands of sheets per hour and has a high duty cycle, meaning frequent use in large quantities will not break the folder. Your monthly use and continuous usage will indicate duty cycle. Folding thousands of sheets in a short period of time? Get a heavy duty paper folder for a lasting performance. Any folder smaller than a heavy duty one will break down from overuse.