This Lochinvar burner assembly, officially known as the NAT 18" BURNER ASSY #32 ORF, is a key component in heating systems. It is designed to be 18 inches in length and comes with a #32 orifice (ORF). The assembly is specifically engineered for natural gas (NAT) applications, ensuring efficient combustion and heat production. The Lochinvar burner assembly is made from high-quality materials for durability and long-lasting performance. It's designed to fit specific Lochinvar models, providing a seamless integration for optimal functionality.