This fits your. Make sure this fits by entering your model number. 3 Gear Speed Regulation: Our fan speed controller can correctly and precisely adjust the speed of centrifugal fans without causing the motor to hum. Easy to Use: Plugs directly into an outlet and no messy wires. You also have the option to use with an extension cord. You can easily adjust your fan's speed with a simple turn of a knob. Suitable for Inline Fans: The speed controller makes an affordable and efficient way to create the optimum environment for your growing needs. Adjust range 50%~100%. To reduce the risk of burning out the fan motor, controller does not adjust below 50% Warning: Don't use it on brushless type motors. Don't use it with the fans exceed 3 amps. The work temperature can't exceed 40℃/104℉, otherwise the controller maybe overheat.