The Large Tool Box measures 22.1 inches x 16.2 inches x 11.1 inches, the latter measure being the height. On top of the ever-present Packout locking mechanism, there's also a space to put a lock.

The Stanley Quicklink Modular Rolling Tool Box is currently $118.74 on Amazon. It is 19-3/4 inches wide, by 13 inches deep, by 28-½ inches tall with the handle extended.