Lp Kit RGRK 90 (Replaces FP-19), Conversion Kit Natural to LP Gas for Direct Spark Ignition Models, Model:36G55, Voltage:24VAC, Frequency: 50/60Hz, Current: .430Amps, Ambient Temperature: -40' to 175'F, Pressure Regulator Setting: Nat Gas- Lo 1"-4"W.C., Hi 2" -5"W.C., LP Gas- Lo 4.5" -10"WC., Hi 8" - 12"WC.(Do Not Set Oulet Pressure Setting Closer Then 1"Nat. Gas or 2"L.P., This Model Is Also Equipped with a Slow-Opening Pressure Regulator for Softer Lighting Characteristics, Inlet and Oulet Pipe Size: 3/4"