I paid to have the shed assembled and the workers (two men) finished in under 4 hours.  Looks exactly as pictured and is room enough for my purposes.  I did not need a floor but if you want a floor simply buy an 8x4 plywood piece, cut it to size and use the brackets included to add a floor.  The doors closed  perfect the first day but I may have hit them when I added some stuff and there is now a small 1/2 inch gap, going to try and figure what I did to correct.  Other wise really roomy and I like the ventilation also.  Completely satisfied.