I am thinking of installing a vent fan in my cheese cave (11.5 Cu. Ft Refigerator). It is an 18 cfm fan that I would wire to a timer to run for 10 minutes 4 time a day, I would mount the fan high and the intake low and filter both, this would most likely cause the fan to move only 9 cfm, so i would change the air 10 times each cycle. This would get rid of any built up gas and clear out some of the moist air. I plan on hanging dry cured sausages in the lower 1/2 that is the main reason for doing this. Any opinions or advice on this?