Pentair 27001-0030S Upper Half Tank Shell Replacement Sta-Rite Pool/Spa D.E. and Cartridge Filter Upper half tank shell replacement Fits Pentair Sta-Rite System 2 modular media pool and spa cartridge filter model PLM300 Also fits Pentair Sta-Rite System 2 modular pool and spa D.E. filter model PLDE48-DE Includes air relief valve, all decals and labels