By combining superior technology with a choice of breath-taking designs, Grohe can provide you with all the elements to enhance your bathing space. Grohe's fittings unite a beautifully elegant appearance that can work in a full range of design schemes - from traditional to modern - with quality materials, German craftsmanship, and superior innovation for long-lasting performance. The impressive portfolio of products that not only dial up the design quotient, but also leverage technology in clever ways to yield smart and sophisticated homes. This replacement extension kit is designed for use with all GrohSafe valves and trims to provide additional 3/4" (19mm) rough-in depth.