"This Mr. Heater 2-Stage Regulator delivers more consistent gas flow to log sets, wall-mounted heaters, gas stoves and more. Size 3/8 inch, Product Type Regulators, Fuel Type Propane, Compatible With Wall mount heaters, log sets, gas stoves, etc. Excess flow soft nose P.O.L. x 3/8in. female pipe thead 160,000 BTU capacity 11in. W.C. water column output"