Do it 36 In. Copper Universal Thermocouple is a reliable part designed for various heating appliances including furnaces, water heaters, and space heaters. Crafted from durable copper, this thermocouple features universal fittings that ensure compatibility with a wide range of units. Its 36-inch length provides ample reach for easy connection between the control unit and the pilot light. Installation is straightforward, and the copper construction s efficient heat transfer and accurate temperature readings, helping your heating system function properly and efficiently. Model Number: 411398/1154