This Marshall Excelsior Excela-Flo Propane Regulator has 1/4 inch female inverter flare and 3/8 inch FPT. It is a two stage regulator and has 22, 5000 BTU I stage, 150, 000 BTU II stage. Specifications•Inlet Size: 1/4 Inch•Inlet Attachment Type: Female Inverted Flare•Outlet Size: 3/8 Inch•Outlet Attachment Type: Female Threads•Installation Type: Vertical•Outlet Pressure: 11 Inch WC•Number Of Stages: 2•BTU Level: 225000 BTU Per Hour 1 Stage/ 150000 BTU Per Hour 2 Stage•Material: Zinc•With Shut Off Valve: No•With Hose: Yes Made In The USA Features An Easy To Read Green Indicator Which Changes To Red When The Service Cylinder Needs To Be Refilled | Marshall Excelsior Excela-Flo Two Stage Propane Regulator