The Raypak 105A Refractory Block is a structural or combustion-area service part for compatible Raypak heaters. Components such as refractory blocks, baffles, jacket panels, doors, and flue-related parts help manage heat direction, protect surrounding surfaces, and maintain the heater’s intended airflow and combustion path. Part 004909F is often replaced when the original part is cracked, warped, deteriorated, missing, or damaged during heater service.These parts may seem simple, but they can affect heat containment, airflow, burner performance, and service access when installed incorrectly. Always match the model and part number, and inspect nearby burners, trays, insulation, fasteners, and exchanger surfaces before reassembly. If the existing component failed from overheating or flame rollout, the underlying cause should be corrected before the heater is returned to regular use. Replacement structural or combustion-area part for the Raypak heater model shown Helps maintain proper heat management, airflow direction, or service-panel fit Useful for repairs involving cracked refractory, worn baffles, damaged jackets, or deteriorated heat-area parts Inspect burners, exchanger surfaces, insulation, and fasteners during installation Confirm exact model compatibility and part number 004909F before purchase
