At Duty Cycle 20%: 800 RPM At Duty Cycle 50%: 1500 RPM At Duty Cycle 100%: 2500 RPM At Duty Cycle 20%: 9.24 CFM At Duty Cycle 50%: 18.48 CFM At Duty Cycle 100%: 30.80 CFM Aluminum 6063-T5 extruded radial fin heatsink