The KIT-LP TO NAT CONVERSION ICON 2.0 CONTROL M4403S/M4503 (FVIR) from Bradford White Corporation allows for the conversion of liquid propane systems to natural gas. This kit is specifically designed for the M4403S and M4503 models and includes all necessary components for a seamless transition. The ICON 2.0 control ensures efficient operation and compliance with FVIR standards. Constructed with durable materials, this conversion kit is engineered for reliability and ease of installation, making it an ideal solution for users looking to switch fuel types.