This is my fan the AF-6, no other connections besides the two wires coming from either side of the motor.

Aero-Flo™ Booster Fan
LifetimeSmoker Reviewed by LifetimeSmoker on . Questions about an inline duct fan.... I bought a 6 inch inline duct fan made by Aero~Flo Model AF-6 I lost all the paperwork about the install of the fan and now when I'm going to hook it up I'm a lil lost. So here are the specs of it and hopefully you guys can help me... It's an; Aero~Flo Booster Inline Fan Model AF-6 Power Input: 120 VAC. 60 HZ. Max Amps. 0.64 Max Watts 37.0 Certified for use to 266 degrees F Rating: 5