This 90° connector can be used to mount your universal fan adapter to the air-piping of your smoker (if you have 22mm piping).
Screw on your adapter, then put the ensemble on your air-pipe.
Check that the fan is oriented conveniently and tighten the nut on the bottom of the connector. You’re done!
By using this 90° connector, the fan-adapter is mounted horizontally which assures that the “flap” inside the adapter opens when the fan blows and closes when it stops. This way you minimize air leaks.