This product is poorly engineered and has some quality issues. You must assemble it but only some connections have pilot holes pre-drilled. Others require you to create the pilot holes. Where there are pilot holes, they are insufficiently wide and deep enough. The wood is not strong and it arrives with stressed joints that will probably require bracing soon. The arbor also twists because of the weak wood.  That could help in placing it to avoid rocks for example but it gives you the feeling that it won't last long.  It has a nice appearance.