Radial Fan-mount/duct wade extruder prusa i3

Fanduct and mount for 40mm radial fan that will fit an wades extruder for prusa i3.
I was searching the web for a good fanduct for a radial fan with an 30mm opening but didnt find anything. so i made my own :) here is the resaults.
It works great and i also made the duct in 2 sizes if you have a different distanse then me from the nozzle to the fan mount. Se the drawing for dimensions.