Very difficult to put together. Took about six hours.The screws holes were all covered up by a piece of veneer so that we had to locate the holes and redrill them. But the biggest disappointment is that the flames look NOTHING like the pictures. The reason I purchased this unit was because I wanted a full fire filling up the insert. This one has a tiny fire. Very unhappy but way too difficult to return. BUYER BEWARE!! If you want a large, bright fire this one is NOT for you.