Thank you for your review, SharonS! The model T3567LF-WL is a wall mount lavatory faucet and is only capable of producing 1.20 gpm @ 60 psi. Fortunately the rough-in valve will also work with our Pivotal Two handle wall mounted Tub Filler, model T5799-WL (valve not included) so you will only need to change the trim. The flow rate for a tub filler depends on the PSI of your home but in general should be approximately 8 GPM at 60 PSI.
https://www.homedepot.com/p/Delta-Pivotal-2-Handle-Wall-Mount-Roman-Tub-Faucet-Filler-Trim-Kit-in-Chrome-Valve-Not-Included-T5799-WL/302958058?keyword=T5799-WL&semanticToken=200300000+%3E++st%3A%7Bt5799-wl%7D%3Ast+cnn%3A%7B0%3A0%7D+cnb%3A%7B9%3A0%7D+oos%3A%7B0%3A1%7D+qu%3A%7Bt5799wl%7D%3Aqu
Best regards, Edward