Product Features: Grohe's limited lifetime faucet & finish warranty Trim constructed of brass ensuring durability and providing aesthetic appeal Volume control designed to be used with a custom thermostatic shower A swinging dial controls the amount (flow) of water to desired application Trim Diameter: 3-15/16" (measured from bottom of trim to top of escutcheon plate) Rough-in valve is not included - when adding to cart valve options will be presented Why Buy Grohe From Us: We are a Grohe Preferred Authorized Online Dealer for Guaranteed Warranty Coverage Customer Care Experts Available 7 Days a Week to Serve You Before & After Purchase A Showroom Experience from the Comfort of Your Home or Office Product Technologies / Benefits: Starlight Finish: Continuously improving over the last 70 years Grohes unique plating process has been refined to produce and immaculate shiny surface that is recognized as one of the best surface finishes the world over. Grohe plates sub layers of copper and/or nickel to ensure that a completely non-porous, immaculate surface awaits the chrome layer. This deep, even layered chrome surface creates a luminous and mirror like sheen. SilkMove: The rich, smooth handling of the faucet lever conveys pure quality. As you change the temperature from hot to cold, one ceramic disc glides effortlessly across the other with absolute precision. These cartridges are manufactured in a high-tech process and feature discs made from a space-proven ceramic alloy that will give a lifetime of maintenance-free operation. About Grohe: At Grohe design goes deeper than just aesthetic trappings. It is a quality feature and is targeted toward the perfect synthesis of form and function. The result is joyous experience you have every time you use one of their products. Grohe subscribes to a straight forward and consumer-centric design philosophy; grounded in the belief that good design must transcend form and function to create an emotional bond with its users. With a reputation built on performance and longevity, Grohe products are sure to surprise and delight users with every interaction for years of unsurpassed performance. With Grohes specialist knowledge it is second to none as they continue to push boundaries, challenge pre-conceptions and create new and exciting ways for their customers to enjoy water.