The Rohl R2012D is a rough pressure balance without a diverter. It is from Rohl's Shower collection. This pressure balance has integrated stops. It has a minimum depth installation of 2" and a maximum depth installation of 3" from the back of the valve. The flow rate should be 5 gallons per minute @ 60 psi. The tub spout installation has a minimum distance of 18" from the diverter or the valve outlet. If PEX is utilized, oversize the supply line to 3/4" for a full flow capacity. Must order the following trims to complete the package: the MB1938, the A6400, the ARB6400, the A6200, the AC600, the BA600, the WA600, the U.6000 or the U.6700. Please see the specification sheet for more details. The Rohl R2012D rough pressure balance without a diverter is covered by a limited lifetime warranty. It is a representation of Rohl's commitment to making products that are easy for the customers to install and use. The House of Rohl has been in the business since 1983. They have reached success by providing distinctively different faucets and fixtures that define real luxury. To create superior products that will enhance your way of living is Rohl's goal. Here at PlumbersStock, we guarantee that you have access to the highest quality products and resources at very affordable prices. We pride ourselves in striving for excellence in every aspect of what we do.