Well the manufacturer stated it would take 45 minutes to assemble.  If 10 people were assembling it, possibly!  It was just my Dad and I, and he’s 73 and I’m very ill with multiple chronic illnesses, so it took us more than 4 hours to assemble.  The directions weee easy to understand, but the pieces weren’t drilled properly and it was a pain having two side rail sections.  I suggest you don’t follow the directions when it tells you to put both pieces of the side rail together by bolting the short leg to it.  That would have been a nightmare had we done what the manufacturer stated to do.  It’s a beautiful bed and it’s very sturdy.  I knocked one star off for assembly time.