Capacity: 100Litre -500Litre Certificate: CE, ISO9001, CCC Frame both for flat and incline roof. Reliable and economic. Products information:1.Dimension of the vacuum tubes:47mm,1.5m, 58mm ,1.8m2.Number of the thbes:15-363.Capacity:100L---500L4.Out tank shell: Stainless steel, thinckness:0.4mm.0.5mm,0.6mm5.Inner tank: 304 2B stainless steel