Lochinvar & A.O. Smith 100135307 Burner 320720-756 this unit provides a 4

this unit provides a 4

Industrial Durability: The cast iron construction with brass trim ensures long-term structural integrity and corrosion resistance

Helps maintain AFUE ratings by stabilizing internal airflow patterns

While universal caps exist

System Integrity: Maintains IP65 and ISO 15218 mounting standard compliance

Lochinvar & A.O. Smith 100135307 Burner 320720-756 this unit provides a 4The Lochinvar & A. O. Smith 100135307 Burner is a critical combustion component engineered for high efficiency heating applications. This OEM burner assembly is designed specifically for compatibility with Lochinvar KBN106 and WBN106 models, as well as A. O. Smith equivalent units, ensuring an exact fit and reliable thermal output. As a direct replacement for the obsolete Lochinvar BNR3425, this assembly facilitates optimal gas to heat conversion