The new Weather Guard 1KEY Ultralock is the next advancement in truck box security. The Ultralock combines one key simplicity with detent technology, providing quick visual assurance your gear is locked down and protected. The box features the new push button lock that can code multiple boxes on a truck or entire fleet to the same key. The Model 178-6-04 is a lo-side aluminum truck toolbox and has a storage capacity of 4.0 cu ft. It is coated with a Gunmetal Gray ARMOR TUF® Powder Coat finish ensuring years of dependability.