When opening the box you are confronted with many parts including some wooden pieces that are not lettered or numbered. It's obvious the manufacturer took a lot of time to write (with diagrams) the assembly instructions. However, I had to call the company five times for clarification. The custoemer service reps were friendly and helpful. The on line videos weren't much help. It took me about five hours to build this cabinet. Functionally, it performs well. A good value for the price.