... polyurethane foaming, thickness: 50-60mme) Bracket: stainless steelf) Auxiliary tank capacity: 5, 8, 10, 20L.g) Installation ... ________________________________________________________________________________ Name: Non-Pressure Solar Water Heater With Auxiliary Tank(Colored Steel Series) a) Item no.: ... thickness: 50-60mm.e) Bracket: colored steel.f) Auxiliary tank capacity: 5, 8, 10, 20L.g) Installation ...