The inside of our Dometic 8.5 cu. in. fridge/freezer does very well. I placed my efforts on improving Grand Design's baffle design on top of the coils (above the fan) so the fridge itself performed better expelling hot air. I've got the hot air going out the vents and not in the cavity surrounding my fridge--behind the cabinetry.

We're keeping ice cream hard now in the freezer.