The fully transparent glass walls ensure enough light penetration and good sound insulation. 
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/