Roof Vent Identification

[Karvi]

2017 Classic 30 RBQ
Does anyone know the purpose of the two small white vents on the roof? They are installed fore and aft of the shower fan vent. They are not the fan vents for the shower or head. Shower and head vents are larger, darker and easily identifiable. The white vents don’t appear to translate to the inside of the trailer.

[Coaster]

They are vents from the holding tanks. Grey and black water. They work of the moving air around the trailer. I have a 12 volt computer fan I hang off the vent.

[Karvi]

Thanks. That's what I suspected, but I'm surprise the black water vent is on the opposite side of the trailer from the black water tank.

[Coaster]

I believe the grey one also has to pick the gallery sink. The grey water in our trailer is between our stove and toilet bulkhead. There’s a accordion door by the stove and the fresh water vent is behind it.

[twbucksr]

These are the plumbing vents.

One is for your grey water waste system and the other is for the black waste. They are installed at the top of each waste piping system to allow atmosphere into their respective waste system. Without them, the sinks and shower would not drain and you could not dump your tanks.

Put a finger over a straw, pull it out of a drink and the beverage stays in the straw until you remove your finger.

There are isometric drawings of both systems for all models in my owners manual.