Excellant. I have the grey 5 shelf bookcase. It was a 3h 45m assembly time for 1 person/myself from box to standing tall! It may be less time for 2 people. It's sturdy and strong, it's already made it (without a scratch!!) through a move, in the back of a UHaul still assembled... Great investment for long term style, reliable shelves (no warp, they're solid).