Shower/Tub Valve: Kohler K-TS5318-4-CP

SHOWER/TUB VALVE: KOHLER K-TS5318-4-CP
Refinia Single Handle Pressure Balanced Tub and Shower Valve Trim Less Valve with Single Function Shower Head, and Diverter
Pairs well with Bathroom Faucet: Kohler K-5316-4-CP (pictured in product description, sold separately).