... upgrade the element structure, made with a wide flow and short membrane sheet design.SpecificationMembrane Active Area......78ft2(7.5m2)Operating ... °F)Maximum Feed SDI....................... 5Free Chlorine Tolerance................ <0.1ppmpH Range, Short-Term Cleaning............ 2~11Maximum Pressure Drop.................... 15Psi(0.1MPa)pH Range ...