This conversion kit is designed to convert natural gas furnaces to propane gas. It is manufactured by Trane, a reputable brand in the HVAC industry. The KIT2851 model is specifically designed for this purpose and is compatible with a range of Trane furnace models. This kit includes all necessary components for a successful conversion, including burners, orifices, and instructions for installation. By converting from natural gas to propane, customers can enjoy increased energy efficiency and potentially lower operating costs.