The grohe 1/2" brass fip wall-mount lavatory rough-in valve is compatible with the grohe 2-hand vessel (not included). this valve features a rough brass finish. Cast-brass construction. Rough brass finish. For use with the grohe 2-hand vessel (not included). 1/2" npt female inlets. Maximum pressure of 75 psi. Nsf listed. Silkmove ceramic cartridge. Assembled depth: 13". assembled width: 6". fitting material: brass. Nsf listed: YES. Assembled height: 3". color/finish family: brass. Inlet size: 1/2". maximum pressure: 72.5 psi. Outlet size: 1/2". length: 8". tube diameter: 0.5".