Robertshaw Hot Surface Ignitor, Series 41-401: Made with recrystallized silicon carbideReaches ignition temperatures in 17 secondsElectrical wires are protected by high-temp fiberglass insulationRobertshaw ignitor is suitable for use with furnaces, water heaters, boilers and moreEmbedded 18-gauge nickel chrome wires for hold and conductivityGasket includedDesigned for operation at 120V AC