While commonly cited for Ultra 310 and Ultra 80 Series 1-2 models

the yellow color-coded finish allows for rapid identification during routine maintenance or manifold assembly

Equipped with a 36-inch Super Cap capillary protection system

It is frequently utilized as a replacement heat exchanger for mid-to-high efficiency boilers

ensuring a secure and durable electrical connection in demanding environments

Carrier 50HJ500451 Flame Retainer 319847-401 While commonly cited for UltraThe Carrier 50HJ500451 Flame Retainer is a critical combustion component designed for high efficiency gas fired rooftop units and packaged systems. Engineered to withstand the thermal stresses of continuous burner assembly operation, this part ensures precise flame stabilization and prevents flame lift off or flashback during the ignition cycle. As a direct OEM replacement part, it maintains the specific venturi airflow dynamics required for complete