Product review (5 stars): Easy to install - and a tip
Youtube has a few excellent videos on installing this.  I did it, my wife thinks I'm a hero.

Here's my added tip:  When the job is done, to re-level the unit - simply push it back into its desired position, tilt the back side forward a little, off the rear feet and set back down.  It will auto-level.  Forget trying to wrench the feet.  Easy and quick.