the J129DDA-1 is typically supplied as the pilot burner only

B) streamline the installation process

This OEM replacement part (Manufacturer Number 52M74) ensures exact fitment and electrical compatibility for a wide range of Lennox models

Verified Performance: Rigorously tested to prevent flame rollout damage to the cabinet and internal controls

For long-term field reliability

Reznor 98481 Shutter Assembly R-410A the J129DDA-1 is typically suppliedThe Reznor 98481 Air Shutter Assembly is a critical OEM component engineered for precise airflow regulation within Reznor unit heaters. Designed to integrate seamlessly with the combustion air intake system, this shutter assembly ensures optimal oxygen mixture, which is essential for maintaining high thermal efficiency and preventing soot accumulation on the heat exchanger. As a veteran technician knows, a sticking or misaligned air shutter can lead