Gerber Plumbing has been manufacturing premium plumbing accessories from shower heads to faucets to china fixtures since 2001. Not only providing necessities, the products include a variety of decorative faucets and bath accessories. Designed with comfort, durability, and style in mind, there is no question that this should be your choice when it comes to modern plumbing. Product Information Product Overview Flow Rate: 1.75gpm Max Flow Rate @ 80 psiShower Arm Length & Material: 6 Metal Shower ArmSpray/Stream Function: 5 Functions: Wide Aeration Centerjet Massage and Wide + CenterjetValve Type: Pressure BalanceBrand: Gerber Features Cartridge Type: Includes Treysta Ceramic Disc Pressure Balance CartridgeDual Valve Technology: Features Dual Valve technology which minimizes water pressure loss as setting changesEasy Clean Nozzles: Features Easy Clean Soft-Touch NozzlesEasy-Glide Selector Ring: Features Easy-Glide selector ring for effortless smooth adjustmentIntegral Check Valve: Integral Check Valves in Cartridge Body to Prevent Cross-FlowWarranty: Limited lifetime Description Parma trim kit now includes the new Gerber Treysta Ceramic Disc Pressure Balance Cartridge. A Gerber Treysta rough-in valve body is required and is sold separately. Components Showerhead: Features Parma 5-Function ShowerheadSold Separately Required: For Use with Gerber Treysta Rough-In Valves G00gs50 or G00gs52 SeriesSold Separately Optional: Deep Wall Extension Kit D113001 and Shallow Wall Extension Kit Ga663b11