Is the B1401013 a direct spark or hot surface ignitor

Optimized Airflow: Restores the necessary CFM to maintain proper draft pressures in gas or oil-fired appliances

Does this part replace the 50J9401

By installing this York air handler auxiliary heat kit

Trane BAYTWIN400A Twinning Kit 322838-752 Is the B1401013 a directThe Trane BAYTWIN400A Twinning Kit is an essential OEM component for field twining two identical furnaces to operate on a single common duct system. This HVAC twinning kit facilitates the synchronized management of air handlers or furnaces, effectively doubling system capacity while maintaining balanced static pressure across the supply and return plenums. Designed for industrial and commercial reliability, the kit ensures that both blowers energize