I f you just want a plastic vent cover for your exterior fridge vent and
you aren't too worried about the looks EH! . Up here in the Toronto area I
buy the mid size Becel margarine container and the plastic tub fits the
fridge vent perfectly. Ok so it looks kind of dumb EH!   But you can cover
the container with some very attractive duct tape and
Bob's your uncle ...you are all done. I just put it on for winter storage
or for going through the car wash or when I want the van to look especially
nice with that great vent cover.

Ron Mighton  Toronto, Canada