The assembly took approximately 30 minutes. But I have not drilled all the holes but in each case the outside, so I could drill into the joints and not in tiles - holds perfectly still. The wall looks very good. But there is an opportunity for improvement. The lifting and lowering mechanism aligns the door not ideal at the bathtub, so that the wall does not automatically correct, the door opens so a piece too far forward. It would be great if you could adjust the. Otherwise, a top product.