VALVE REQUIRED: This trim kit requires a M-CORE 3-Series Transfer Valve to complete installation FOR USE WITH TWO OR THREE SHOWERING DEVICES: M-CORE Transfer Valves can control 2 or 3 showering devices, a simple transfer cartridge modification changes the valve’s flow from two outlets to three outlets IMPORTANT: When using 3 Showering Devices, transfer valve cartridge must be modified. Simple cartridge modification changes the valves flow from two outlets to three outlets. See Transfer Valve Instructions for additional information. IMPORTANT: When using 2 Showering Devices, designated outlet 3 must be CAPPED. Caps sold separately. VERSATILE DESIGN: M-CORE’S adaptability allows the valves to be roughed in with the option of functionality and style changes that don't require removing or changing the valve STREAMLINED INSTALLATION: Features an integrated mounting bracket that secures the valve directly to a brace, streamlining the installation process and saving time BUILT TO LAST: Backed by Moen’s Limited Lifetime Warranty