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,but standard is 2.5m and 4m.Frame Material:1)High-strength aluminium alloy with PVDF coating.2)Conector is made of zinc powder-coated steel.3)The frame is strong,durable,light in weight,not easy to rust..