Resideo 391937 Conversion Kit

Resideo?á391937 Conversion Kit, Single Stage Natural Gas to LP Gas, 8"-12" Adjustment Range, Includes Regulator Spring, O-Ring, Screw and Cap, Used with V400, V800, VS820, VS821 Series, Standard and Slow Opening Valves, Not for Use with Step Opening Valves

391937 is identical to 391937/U