Maxitrol 325-5L600-1-LIM Regulator

This ports are 1" correct? This comes with both pieces as seen in photo?

Here is the description:

1" NPT, 5 PSI Max Inlet Pressure for Natural Gas, 2 PSI Max Inlet Pressure for LP Gas, 7-11"wc Outlet Pressure, 465,000 btu/hr Max Capacity, Lever Acting Design with OPD, Certified Line Pressure Gas Regulator with Vent Limiters

This comes with what you see on the picture.