Carrier 336847-402 Manifold 322838-753 you must use the equivalent

you must use the equivalent Allanson 421 series model

making it suitable for high-output commercial boiler safety requirements

The internal sub-panel is plenum rated

the Bard 5152-059BX maintains consistent CFM delivery and airflow velocity across the heat exchanger

Carrier 336847-402 Manifold 322838-753 you must use the equivalentThe Carrier 336847 402 Manifold is a critical OEM replacement part engineered for high efficiency gas furnaces. This gas manifold assembly is constructed from durable, painted black metal and features a standard 1 2 inch pipe thread size for secure fuel line integration. Designed to route gas evenly through the burner assembly, it ensures uniform heat distribution and prevents inconsistent firing or pressure drops across the heat exchanger. As a