I like this rack and recommend it.  Using it to encase a Hartke Kilo bass amp that requires 3 U's.  Also have a 1 U fan, 1 U tuner, and 1 U power conditioner.  Using support panels from the back to support the fan and the power conditioner.  Had no problem with the front and back rack holes lining up correctly.  Everything fit well.  Wheels appear to be soft plastic so the jury's out on how well they'll hold up over time.  But so far, no problem.  Pull handle is okay but could be more rugged.  Again as with the wheels, time will demonstrate the durability of the unit and its components, but so far no problem.