This Delta Shower System is smartly designed and economical. It is easy to install because it requires only one rough-in valve. Many other Shower Systems require several rough-in valves and a complex network of plumbing to be installed in your wall. This results in expensive installation costs and requires more significant remodeling plans. Making use of Delta’s 3-setting Diverter, we are able to offer a better solution. Delta Shower Systems are some of our best selling products but we know they can be a little tricky to set-up. There are many components that are required to build a Custom Shower System. This Dual Handle Shower Control Features a Delta’s highest flow rate Thermostatic 17T Cartridge with an 8.53 GPM flow rate at 80 PSI. It features a separate Temperature and Volume Control Handle. We have included the necessary Rough-in Valve and all component pieces to make this package fully ready to install.