Perrin & Rowe Holborn 1/2" Therm & Pressure Balance Trim With 3 Functions (No Share) U.THB47W1LSPerrin & Rowe Holborn 1 2 Therm & Pressure Balance Trim With 3 Functions (No Share) U. THB47W1LS Thermostatic and pressure balance shower trim designed to independently control three shower functions with no shared operation. Features Combines thermostatic and pressure balance technologies Set it and forget it temperature memory Supports 3 independent functions with no shared functionality CEC compliant No need to plumb a separate shut off or diverter