Reznor 195644 Fan Blade 322838-753 provided the part number matches

provided the part number matches the manufacturer's technical manual for that specific model tonnage

The Robertshaw 620-402 Transformer is a heavy-duty 48VA multi-tap electrical component engineered for maximum installation flexibility in commercial and residential HVACR environments

ensuring reliable performance in commercial environments

While configurations can vary by production batch

As a veteran-grade Lennox furnace limit switch

Reznor 195644 Fan Blade 322838-753 provided the part number matchesThe Reznor 195644 Fan Blade is a critical OEM replacement component designed for compatibility with specific Reznor unit heaters and air handling systems. Engineered for precision airflow, this 10 inch diameter fan blade features a 17 degree pitch across its 5 blade configuration, ensuring optimal static pressure and heat exchanger efficiency. Built with a 3 8" bore, it facilitates a secure connection to the motor shaft, maintaining balanced rotation