Universal and original equipment ignitor. Check our handy chart to see if it will work for you. For use with many types of furnace equipment including furnaces, boilers, rooftop heaters, infrared burners, unit heaters, and water heaters. 18-guage nickel chrome lead wires and metalized in place for maximum holding strength and electrical conductivity. Lead wires are enclosed with high temperature fiberglass insulation for total electrical protection.