These came in one box, sealed and packaged securely. They took me a couple of hours to put together on my own (39 yr old female). There were a few screws that gave me a run for my money .. I had to sit and speakcurse to the furniture gods to allow me to get the screws to thread. Took about 47 tries, but I finally got it! (They were the ones on the end that require the Allen key and a screwdriver to hold in place at the same time). 
Once together, the grey bunks look gorgeous and are perfect for the boys room, with their redblackwhite plaid bedding. Another bonus - they were on sale !!!