Polycarbonate 8x6 greenhouse. Even with assistance the enclosed instructions were difficult to follow. A time lapse DVD would be an option to include with the A4 booklet. At one stage I even rang seeking the price of professional assistance but was quite curtly informed by the male person who answered my question that the greenhouse I had purchased didn't qualify for help. Two amateur people 6 to 8 hours to erect that greenhouse is a bit ambitious. Six weeks in now and because of the weather conditions I still have the panels to install. My indoor growing season gone now.