This is an adapter for the FLsun fang duct fan (https://www.thingiverse.com/thing:2882635), made by badjob, to use with a bigger radial fan (Y.S.TECH 6018 60mm x 18mm). However, it might fit other similar designs as well.
The reason I`ve made that, because that was the fan I had on hand, so why not. I wanted to get some practice in 3d design.
The fan is quite big, but it should provide plenty of power to cool your layers
It is push fit with the fan and duct and has good hold, but you can use the additional screw holes if you need more assurance.
I will be making a remix of the fang, but if you want to try a bigger fan with your existing fang, this is the thing for you
I cranked up support density to 30% to have a better finish on the angle, not strictly necessary.
Don`t need to brim it either if you prefer not to.