Formax FD 312 - Office Desktop Paper Folder [Full Warranty]. _ The FD 312 Office Desktop Folder provides an economical solution for low-volume folding projects. Clearly marked fold settings and out-of-the-box operation make this folder ideal for churches, schools and small offices that demand quick and easy set-up with minimal adjustment. This compact folder processes 11" and 14" paper at speeds up to 150 sheets per minute, and can accommodate both standard and custom folds. Featured Highlights; Speed: Up to 150 sheets per minute. Drop-in top-feed system. Folds 11" and 14" paper. Hopper capacity: Up to 200 sheets. Recommended Options: Automatically square and align forms with a 402 Series Jogger.