I remixed it to fix the issue with the bed heating sponge touching the top of the cooling housing, preventing the bed limit switch from triggering.
Increased the lateral space to draw in more air and removed the rear part that was causing blowback.
You can use it for pushing or pulling air; I prefer pushing air towards the bed to prevent hot air from passing through the motor
Note: If possible, print it in a material that can withstand temperature. I printed it in PLA+ and had no issues, but you never know. Also, be careful with the top part of the housing, as the wall is very thin and it has become a bit delicate.
Note 2: Just added the 60mm version as requested.
Btw, this is my first remix. I hope everything works as well for others as it did for me. Thanks to @GiuseppeCaputo for the original design.
The author remixed this model.
Increased air circulation space, reduced the top wall thickness to prevent (or minimize) contact with the bed heating sponge.