Lovely new fireplace.  There are a few omissions or outright mistakes in the assembly instructions but I was able to work through them until Step 15 (of 20).  I am strong and fairly adept with tools but the size and weight of this unit make it impossible to assemble single-handedly so I called in my trusty handyman for Steps 15-20.   In the future, if Assembly is rated “Tough”, I’ll believe it!  Now I have years to enjoy it.  The finished product rates 5 stars.  The Assembly process, 3 stars.