Modern Exposed Thermostatic Shower Valve from Plumb Warehouse
2-Handle Thermostatic Shower Valve Trim Wall mount US STANDARD Plumbing, Exposed Shower Faucet with Constant Temperature water mixer for Bathroom, RV, Clawfoot Tub - Amazon.com
How do thermostatic shower valves work? - Luna Spas
Harbour Status 2 Outlet Concealed Thermostatic Shower Valve (Three Handle) - Chrome | Tap Warehouse