budlightman, I just when out and looked at ours it looks like a canvas curtain with a weighted rod at the bottom. There are strips of Velcro loops on the inside and outside. Check and see if anything is missing. I was expecting a plastic door like our 03 Journey had. Don't see anything to make noise unless the Velcro loops are missing.
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Grant & Pat
2014 Adventurer 35P
2021 Rapid Red 4dr Bronco OBX
Mine was not exhausted to the outside so I changed it. The outside cover is to high to reach so I glued a magnet to the corner and a washer on the inside. It stays closed until the fan is on.
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Myron & Deborah
08 HR Endeavor 40 SKQ
2012 Ford Edge Limited FWD 3.5L
Aluminator tow bar, Demco base plate