The KEITH M-Series Drive increases efficiency in the mobile document destruction environment. The M-Series stores shredded documents and automatically unloads them once the truck reaches a secure location. Unloading time is under five minutes and no tipping is needed. KEITH provides the one and only WALKING FLOOR® unloading system. Since 1973, KEITH Manufacturing Co. has produced the WALKING FLOOR® brand of horizontal unloading systems at its location in Madras, Oregon. Systems are used in a wide variety of industries throughout the world to handle bulk materials. KEITH Manufacturing Co. encompasses five international locations and has a global network of dealers to service our customers worldwide. Today, the WALKING FLOOR® brand name is known internationally to describe the self-unloading products designed and manufactured exclusively by KEITH. The company has sold more than 60,000 units around the globe and holds over 270 patents.