Toto THP4547#PN Polished Nickel For Faceplate - Replacement Part. Toto takes pride in providing their customers with quality plumbing products that are durable, dependable and visually pleasing. This line of Genuine Replacement Parts are developed to perform and last the way the they were originally intended too. This Toto THP4547#PN Polished Nickel For Faceplate is a Toto Genuine Replacement Part designed for TS416T Aquia Thermostatic Mixing Valves. This Faceplate features a stunning Polished Nickel Finish.