This is a Robertshaw 41-401 hot surface ignitor, perfect for use with central furnaces. It is a reliable and efficient component that will help ensure your heating system is running smoothly. The brand name speaks for itself in terms of quality, and this model is designed specifically for use with the type of heating system you have in your home. Don't hesitate to replace or upgrade any components in your system with this reliable option from a trusted name in the industry.