Grohflex Timeless 4-Spray 2-Function Pressure Balance Shower System  - 2.0 Gpm New Tempesta Cosmopolitan 100 Shower head - 4 spray, 2.0 gpm (26 043) Relexa 6-5/8 in. shower arm (27 412) GrohFlex PBV Timeless dual function (19 867) New Tempesta Cosmopolitan 100 shower set - 2 spray, 2.0 gpm (26 076) Relexa wall union (28 672) New Tempesta Cosmopolitan 1 Shower head - 4 sprays, 2. gpm (26 43), Relexa 6 5/8 shower arm (27 412), GrohFlex PBV Timeless dual function (19 867), New Tempesta Cosmopolitan 1 shower set - 2 spray, 2. gpm (26 76), Relexa wall union (28 672) Requires GrohFlex Universal Rough-In Box (35 26)