The Resideo Q345A1305 Intermittent Pilot Burner and Ignitor with B-Bracket is a precision-engineered ignition component used in gas-fired HVAC equipment such as furnaces, boilers, and water heaters. It operates by producing a controlled pilot flame and spark ignition sequence that safely lights the main burner only when needed. This design improves energy efficiency by eliminating constant gas usage. Its integrated bracket ensures secure installation and alignment, while durable construction supports consistent performance, reduced maintenance, and reliable system operation in residential and light commercial heating applications.