Easy to print, fit, and make it looks good around the pipe of the radiator.
On the upper surface, you are free to play with the “Top infill pattern” in the slicer.
Printing doesn't require any support.
Use PETG, ABS or ASA, since PLA will warp from the heat of the pipe, or try to printing with higher infill.
The author marked this model as their own original creation.