The Delta MultiChoice Universal Shower Valve Body Rough-in Kit allows easy changes to shower function, style and appearance without altering the plumbing behind the wall. The trim is sold separately. A revolutionary system that allows easy changes to shower function, style, and appearance without altering the plumbing behind the wall - exclusively from Delta Faucet Company.. Trim sold separately and includes appropriate cartridge. BX = single box model. HF = high flow, shower-only applications. Also features 1/2 in. universal outlets, inlets/outlets have male threads. Accepts single, dual, or dual thermostatic cartridge. Back-to-back capability. Allows easy fixture changes without behind-the-wall plumbing alterations. Can be tested with air or water without valve using supplied test cap. Lifetime limited warranty covers parts and finish defects. Plumbing Part Type: Rough-In Kit. Application: Shower