The Big Tents are available in clear span width from 3m-50m. The length of the bigtent has no limit and can be increased 

or decreased by 5m bay distance.The frame is made of aluminum and the cover fabric is double coated PVC.It can be widely used 

for wedding, party,exhibtion, and some other events. 
Size:
1)Span Width: 3m,6m,8m,9m,10m,12m,15m,18m,20m,21m,25m,30m,40m.
2)Length: not limited,extended by 3m and 5m.
3)Eave height: from 2m to 10m,standard is 2.5m and 4m.
Advantage:
1.High strength,rustproof,lightweight 
2.Waterproof,fireproof,UV resistant 
3.Factory good price,fast delivery   
http://www.guangsha-tent.com/