vent on fridge compartment

[coxygeelong]

Hi everyone, I have recently purchased a 2006 Pioneer Argyle SE  I noted the the fridge compartment has a vent that pops out. Do you travel with this vent open to stop dust or closed . On a  recent trip I noticed some dust in this compartment with the vent closed and wondered if it needs to be open when traveling.
Thanks David 

[feisty]

Hi David.
Welcome! I have a similar camper and travel with mine open on hot days and closed most others.  If you have one of those fridge thermometers with ambient temp (inside fridge box) and fridge temp (inside fridge) that will tell you when your flap should be open.