The WEATHER GUARD Saddle and Lo-Side Boxes with 1Key Ultralock offer maximum protection while maintaining fleet management versatility. The boxes provide a secure system that's safeguarded against theft, and the versatile key allows users to manage one truck or an entire fleet of truck boxes by coding every truck box lock. The boxes feature a red push button visual locking cue, making it easy to tell whether the lock is engaged or not at a single glance. There are over 60 unique models of boxes that fit on a wide range of trucks.