These blank orifices can be used to convert the Grand Hall Enterprise Model REGAL04ANG from natural gas to propane or propane to natural gas..

This set includes 3 main burner orifices, a side burner orifice and a back burner orifice. It is usually necessary to swap the regulator as part of the conversion. Note: The back burner orifice requires 3 holes. Other manual adjustments might be necessary, so check your factory instruction manual details.

These orifices come undrilled and must be drilled to a specific size to suit your needs. Seller will bore them to your specification for an additional fee, but you must contact seller prior to ordering, otherwise you will need to bore these yourself before your can use them. International buyers, please inquire about international shipping rates before ordering. FOB origin.