A fitting for a bathing installation includes a body portion defining a hollow main body portion having an interior opening, and a connection portion having a passageway in communication with the interior opening. The connection portion includes at least one connection port for attachment to a hose carrying pressurized water, and a flange portion defining a recessed mount surface inside a peripheral lip surrounding a recess. Open regions are defined in the peripheral lip. A nozzle member is fitted into the interior opening and has a nozzle orifice configured for concentric mounting relative to a hole formed in the wall of the vessel to allow pressurized air or water to pass from the connection port through the central opening and through the nozzle orifice into the tub hole and into the interior of the vessel.
