“Does this unit have a fresh air vent? Does this unit have a fresh air vent that opens to allow you to exhaust stale air to the outside and draw in fresh air? I have an old Fridgidaire unit (11+ years old) that has this feature and it is very helpful. Without it the room can start to smell musty. This is especially useful when it is cool out and you wouldn't need to run the A/C if you could pull in fresh air from outside. I can't tell from the picture or the product description if this unit has this feature or not.”