According to Rheem FAQs the LP Conversion Kit is not available at the moment. The orifices contained in this kit are size 62-221**-**.Refer to the latest LP Conversion Kit Index (92-215**-** for Gas Furnaces or 92-215**-** for Package Equipment) to determine if these orifices are suitable for your installation based on the altitude and heating value. If not, it will be necessary to order the specified orifices separately.