American Standard T184500.295 Valve Trim Kit Times Square, Brushed Nickel Showerhead: Brass construction, durable quality that will last a lifetime. Rough Valve Body: Durable quality that will last a lifetime. Ideal material for prolonged contact with water. Ceramic Disc Valve Cartridge: Assures a lifetime of drip-free performance. Allows easy control over both water temperature and volume. Pressure Balancing Valve Cartridge: Maintains constant output temperature in response to changes in relative hot and cold supply pressure. Diaphragm system engineered to eliminate cross flow. Avoids failure due to mineral deposits -ideal for use in hard water. Back-to-Back Capability: Hot and cold can be reversed quickly and easily. Adjustable Hot Limit Safety Stop: Limits the amount of hot water allowed to mix with cold. Reduces the risk of accidental scalding. Exclusive Plaster Guard: Plaster guard is designed to protect valve during installation and serve as a mounting plate for thin-wall installations. Two piece design allows valve to be tested prior to trim installation. Wide Rough-in Range: From 1-5/8" to 3-1/4".