Trim kit includes: Metal handle, escutcheon plate, one-piece cartridge. Rough-in valve is sold separately. Double Ceramic Pressure Balance Cartridge: Combination of Ceramic Disc Mixing Valve and a Ceramic Balancing Spool in a one-piece cartridge Ceramic Disc Mixing Valve: Assures a lifetime of drip-free performance and smooth handle operation Ceramic Balancing Spool: Maintains a constant output temperature in response to changes in relative hot and cold supply pressure. Ceramic material is unaffected by mineral deposits and harsh water conditions Integrated Check Valves: Engineered to eliminate cross flow REQUIRED BUT NOT INCLUDED: RU101 Flash Shower Rough-In Valve With Universal Inlets/Outlets, sold separately. RU101SS Flash Shower Rough-In Valve With Universal Inlets/Outlets With Screwdriver Stops, sold separately. RU108SS, RU107SS, RU107E REQUIRED BUT NOT INCLUDED: RU102SS Flash Shower Rough-In Valve With Stub-Outs With Screwdriver Stops, sold separately. RU107 Flash Shower Rough-In Valve With PEX Inlets/Universal Outlets for Crimp Ring System, sold separately. REQUIRED BUT NOT INCLUDED: RU107ESS Flash Shower Rough-In Valve With PEX Inlet Elbows/Universal Outlets With Screwdriver Stops for Crimp Ring System, sold separately. REQUIRED BUT NOT INCLUDED: RU108ESS Flash Shower Rough-In Valve With PRX Inlet Elbows/Universal Outlets With Screwdriver Stops for Cold Expansion System, sold separately.