It took AT LEAST 3-4 hours to put together and was by far the worst assembly project I’ve ever done. (I’ve done many and usually enjoy it) The 17 screws DO NOT fit well most of the time. They have to go in right for it to line up and when I finally got them in some wrecked the cheap white “paint”. The left white side has a long crack down the mantel and it doesn’t line up well. Despite that it looks great from afar and the fireplace insert is very nice. If I had purchased it local I would have stopped putting it together at hour one and returned it.