Thank you for your question, Brian! I'm sorry for any confusion with your new Delta shower trims and we would be happy to help. The rough-in valve R10000-LBX accepts all multichoice single, dual, or dual thermostatic cartridges and will work with all T13/T14 or T17/T17T series trim kits. If you do not have a current multichoice universal valve, the trim kits may still work, however you will need to continue using the non-multichoice cartridge in order to use the trim kit as a multichoice cartridge will not work with an older valve body. If you do not have a Delta rough-in valve then you will need to remove these valves prior to using Delta trims kits with a compatible valve.
Best regards, Edward
Date published: 2019-02-18