COMPLETE FLEXIBILITY: Delta's MultiChoice Universal Valve gives you flexibility to upgrade your shower trim without altering plumbing. It is compatible with most Delta single-function, dual-function, or dual-function thermostatic trim kits CONNECTION TYPES: 1/2-inch female IPS inlets and outlets accept PEX or CPVC adapters. Screwdriver stops are conveniently included VALVE BODY ONLY: Valve body only, required cartridge is included with your Delta shower trim of choice BACK-TO-BACK CAPABILITIES: Back-to-back installation capability for multi-unit buildings LIFETIME LIMITED WARRANTY: You can install with confidence, knowing Delta's MultiChoice Universal Valve is backed by Delta Faucet's Lifetime Limited Warranty