The Phoenix Products R0403 Catalina 4 Inch Two Handle Chrome Shower Valve features a vacuum breaker for attaching a hand held shower. It also features a quarter turn cartridge, ADA compliant lever handle, sleek contemporary style, and scratch and stain resistant finish. All Catalina underbodies are made of a durable synthetic polymer that resists corrosion, rust and mineral build-up, using a unique spin welding process to create a one-piece underbody eliminating o-rings that can cause leaks.