Valve Required, Sold Separately: This faucet trim kit does NOT include the valve body and requires a compatible Pfister rough-in valve for installation (sold separately) 5-Hole installation Decorative shower arm increases height and reach Rated to meet or exceed CALGreen criteria, which helps to conserve water in the average home by at least 20 percent Compliant with California energy commission (CEC) water-efficiency standards Advanced Installation Knowledge Recommended: We recommend hiring a professional plumber to ensure proper and safe installation, minimizing the risk of complications.