The TOTO MiniUnit Rough-in Box for Shower Trim enables simplified customization of thermostatic controller trims. Constructed of solid brass, yet compact and lightweight to boost workability and cut down on installation times. The compact body weighs 1.6 pounds. The MiniUnit works with the following TOTO trim models: TBV01406U, TBV01407U, TBV01408U, TBV02401U, TBV02403U, TBV02404U, TBV02405U, and TBV02406U.