Very easy assembly. My husband was supposed to put this together for me while I was out of town. He forgot. I called and said I would be home in a few minutes and was bringing dinner. By the time I got home three minutes later, the shelf was assembled and I would have been none the wiser had he not fessed up. He says I should always order from this manufacturer in the future. (No more of the Swede with the crazy assembly diagrams.)