Roof window fan (camper van) with springs

thingiverse

I changed the original slightly for my needs. (Anyway, thank to the author for this nice idea and models!) - The fan holders have now a flat end for easier printing resp. for easier removal of support structures. The rectangular hole is now free. Please consider a brim for printing - I didn't want to print the clamps from a flexible material - it is a pain for me (and expensive) I changed it to a spring mechanism. it is a 10mmx20mm spring out of a box a bought at ebay (see pic). I used cable ties, you could have used M3 screws, too.