If their not low point drains they could be overflow drains from your fresh water tank. I had some on my last toy hauler that when the tank got full they would release the pressure and let out water when tank was overfull. That's what mine looked like on the ends also.
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2015 Ram,3500,Dually,B&W,4.10s,Aisin,Limited,Silver
2018 Raptor,428SP w/full body paint
2012 Harley, Ultra Limited
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