Perrin & Rowe Armstrong 1/2" Therm & Pressure Balance Trim With 5 Functions (Share) U.TAR45W1DWPerrin & Rowe Armstrong 1 2 Thermostatic & Pressure Balance Trim With 5 Functions (Shared) U. TAR45W1DW Thermostatic and pressure balance shower trim designed to control up to five functions with shared operation. Features Thermostatic and pressure balance temperature control Set it and forget it temperature memory Supports five functions with shared operation Allows up to three independent functions with two running simultaneously Integrated volume