Help identifying part in interior of truck

2001 FORD F-350
150,000 MILES • 4WD • AUTOMATIC
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KERI CARLTON
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What is this thing? It is located right above the seatbelts and the windows on each side of the interior of the cab kinda near the roof.
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Aug 17, 2020 at 10:47 AM
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STEVE W.
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Could you take a picture farther back please, it looks like a snap for use with something like an interior curtain but it's so close it's hard to tell for sure. is that a screw in the middle?
Aug 17, 2020 at 12:18 PM