Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3401211.
I installed the Creality3D Official BL Touch package *1 with the included Pin27 adapter and found that the controlbox cover no longer fit; the fan position interfered with the Pin27 adapter.
I mounted the cover 1cm to the back, using the fan shroud to keep it in place, but was far fro happy with that solution.
I used the cover (by S1ckn3z), removed the smoother mount points, reduced the height, shifted the fan hole and mountpoints 1cm back
Now the fan shroud still did not fit, so I lengthened it with the same cm.
The 3d models are not very nice at the moment, but they print fine and work as intended.
I needed to use slightly longer M3 screws for both the cover and the fan, as the stock screws would not reach.
The fan now fits perfectly between the Pin27 board and the TL Smoother holder *2 I use.
Plan for the next version was to integrate the two parts, but that will require some serious amount of support material, so I doubt if it's a good plan.
*2) https://www.thingiverse.com/thing:3117672 - V2.2 Type A.
Per request, an experimental fully integrated, single print cover with fanduct is added to the thing :)