... rings UV stabilized high temperature silicon rubberTest pressure:10 barCollector mounting flat roof/inclined roofMounting angle:15-50CInlet:3/4" ... Vacuum Degree,P<=5*10-4,Service Life,10 years Mounting FrameAluminum Alloy,Thickness,1.8 mm, not have back ... Quantity(set)20102787763574022116916613613040HQ278213209172171Price(USD) EU separate copper pipe high-press solar collector for bathroom 300L or 500L