I bought this a month ago, the instructions were a little difficult to follow and definitely need two people to assemble and build. Overall, it took 12 hours to build. Some minor nuts and washers were missing and Lifetime put in mail on notification. Having a level base is key!! My concrete base was unlevel by just millimeters or 1/8 inch and had to buy extra shims at hardware store to adjust or doors will not function. Had to partly disassemble once because tall and short door bars were place incorrectly.