The GR22-S is a Liberty guide rail — a 2" female NPT discharge cast iron guide rail with a split pump claw, fitted for LE40, LE50-Series, and PRG-Series pumps. All GR-Series rails use a rugged one-rail design with an auto-guide feature, a 1-1/4" NPT guide pipe connection (pipe not included), a heavy-duty nitrile sealing grommet, a cast iron upper rail support bracket, and a powder coat finish for corrosion resistance.