RV fridge circulation fan mount

Designed around Dometic RV fridge cooling fins and an Arctic F8 80mm 12v fan. The fan is supposed to improve cooling efficiency of the unit by circulating air across the fins. I attached mine on the opposite side from the internal light so I've included a rudimentary wire clip for cable management. There are 2 files for mounting a buck converter ( https://www.amazon.com/gp/product/B01GJ0SC2C ) if the full 12v is too noisy.

I've seen a few "production" offerings for this type of thing on amazo