The Dahle 20394 High Security Shredder is NSA/CSS 02-01 approved and supports top-secret shredding requirements. It features a 16″ feed opening and a powerful 2 horsepower chain-driven motor, an automatic EvenFlow Lubricator®, and integrated jam protection to eliminate frustration. It’s design maximizes durability and minimizes flexing to produce a consistently fine 1mm x 4.7mm size, reducing a single sheet of paper into over 15,500 tiny particles. This High Security Shredder uses the latest technology to offer full electronic capabilities including such safety features as Automatic Shutoff when the cabinet door opens and Auto Reverse to prevent an overfeed. Automatic On/Off and Bag Full Auto Off are features that offer both convenience and satisfaction in knowing you will be notified when it’s time to empty the box or change the bag.