Flexible ventilation hose

[simdim]

Folks,
I need to order new ventilation hoses for my E29 today but for the life of me do not remember if they are 3" or 4" ....

Cheers,

 

[Loren Beach]

The ones on our newer 34 footer are 3" and that's the size that matched our Atwood inline blower.
LB