it features a 5-inch diameter frame and resilient sleeve bearings for quiet

What are the specific connection sizes for this model

Professional-Grade Hardware: Includes four high-strength spacers and necessary fasteners built to withstand the rigors of commercial HVACR service

verified 624701R compatibility includes high-efficiency T4BF

As a direct P291-1013 replacement

Hoffman Controls 760-ECM Control 323080-701 it features a 5-inch diameterThe Hoffman Controls 760 ECM is a high performance ECM motor speed controller engineered for precise, manual modulation of brushless DC motors. Operating on a class 2, 24V AC power source, this controller is line voltage independent, simplifying field installation for contractors. By utilizing a PWM output (Pulse Width Modulation), the 760 ECM allows technicians to dial in specific airflow requirements, optimizing HVAC efficiency and reducing overall