i bought it used and paid $400 and had to take it down . it was 60 ft long , i made mine only 30 ft long , did not use all the pieces . about 24 ft wide and about 17 or 18ft at the middle it is a greenhouse you would see on a nursery, teh end is 2by 4 with plywood and two man doors along with an old window up high that i open in thne summer to let any extra heat out.it is not exactly a half cirle it has a little bit of a point up top. the front opening is about 16 ft wide and almost the full height of the greenhouse, so i can back my boat in with the encloser up. for a picture email me at
[email protected] . the plastic was about 200 bucks, for 5 years . new ones are expensive look up greenhoses on line. bb