It looks like there are two different Dometic A/C drain cup kits out there.
In contacting Dometic, they are saying the following part number is the correct "Airstream Drain Kit", part number 3107688.024
Versus the other generic Dometic kit that's more readily available - 3107688.016
From what I can tell in picture, the cups look identical, with the generic .016 kit coming with a gasket set. Which is necessary as I understand it, to give the cups sufficient clearance against the roof surface.
Does anyone for sure know if there's a difference in the cups themselves?