The Southbend 1008757 Range Orifice Hood is a propane gas metering component used in compatible commercial range burner assemblies. Its #57 opening regulates the amount of LP gas entering the burner, allowing the fuel supply to match the burner’s specified gas requirement. Installed at the gas connection point, the hood-style orifice provides a controlled passage before the fuel reach... https://partsfe.com/orifice-57-for-southbend-part-1008757