The R1G225-AG15-11 from ebm-papst Inc. is a 225 mm round motorized impeller DC brushless fan rated 48 VDC, with a ball bearing and a 4-position rectangular connector (225X107.0 mm).
The R1G225-AC73-52 from ebm-papst Inc. is a 48 VDC round motorized impeller with a 225 mm diameter (99MM), 625.0 CFM (17.50 m³/min) airflow (Ball), and 4 wire leads.
The R1G225-AF11-39 from ebm-papst Inc. is a 48 VDC motorized impeller fan with a round 225 mm diameter frame, ball bearings, and a 4-position rectangular connector.