While the dimensions are compatible

Use this Eaton M-Max VFD to optimize motor speed control and significantly reduce energy consumption in centrifugal pump and fan applications

Optimized Blower Control: Prevents system bottlenecks by managing precise "on" and "off" delay intervals for the indoor fan

making it suitable for most standard suction line applications

Unlike automatic reset controls that may allow a system to short-cycle during a freeze-up

Loren Cook 719288 Motor 321894-706 While the dimensions are compatibleThe Loren Cook 719288 is a heavy duty, OEM replacement motor designed specifically for GC and GN series centrifugal ceiling and inline exhaust fans. This 115V 50W 1350 RPM motor features a 2 speed configuration, allowing for precise airflow adjustment to meet the ventilation demands of commercial and light industrial environments. Built for reliability, this motor is a direct drop in for Loren Cook fan models including the GC 182 through GC 188 and GN