Abs drain pipe size in trailmanor

[robtherod]

Does anyone know the drain pipe size in a 3225 trailmanor?

[Kidkraz]

Could you tell us which drain? Sink, grey water?

[robtherod]

Bathroom sink drain pipe that goes into the kitchen sink cabinet to the gray tank. The sink drain goes into the same abs drain pipe. Is it 1 1/4” or 1 1/2”?
Thank you

[robtherod]

I mean the kitchen sink goes into the same drain pipe.

[robtherod]

Found it. It’s 1 1/2” ABS