Only one thing wrong with my 8 x 12 greenhouse purchase and that is the fact that the guttering on either side of my greenhouse does not work it appears to send the rain water to the centre of the guttering and not to either end where it is supposedly drain down into my water butts I do have the over the top anchor system as a safety measure as we sometimes get very high winds [gusts up to 80/90] but the wire ropes do not interfere with the guttering. The land on which my green house is sited was specially built for that purpose and is perfectly level which leaves the design of the guttering at fault, not a very good advert considering the price of the greenhouse.