What diameter waste pipe

Geggsie

I have a new van but it is sited in storage. I know that I will need to purchase a new waste pipe but am unsure of teh diameter. It is a 2007 Sterling Eccles Jewel. Any help appreciated before I order the wrong size

KjellNN

If it is the grey bendy pipe, ours uses 28mm.

We have a 2008 Sterling.  It was also 28mm on our 1998 Sterling.

Geggsie

Thanks

bootneck248

There are two sizes, if the cap flap on your grey water outlet hinges upward it is the smaller size, if hinges downward it's the larger size,