320 Dometic toilet install

[Seasquared]

Just in case anyone interested, installed the Dometic 320 in a 303rls this weekend. Tight against back wall but all good!

[[email protected]]

I put one in the forward lavatory in our 385TH last spring. It also sits tight against the back wall, but works well. No way to use one in the aft lavatory, it's too tight in there.

[boyscout]

Just in case anyone interested, installed the Dometic 320 in a 303rls this weekend. Tight against back wall but all good!

Except for [email protected] post above (thanks for the heads-up) I don't think I've seen a report where someone could NOT install the Dometic 320 in their main bathroom.

I believe the Dometic nominally requires 11" from center of the drain pipe to the wall, and many Grand Design trailers nominally have 10" in that dimension, so it makes people hesitant but it pretty much always works out. One person has reported unscrewing the flange on the floor, pulling it out a bit more and re-screwing it (which is a good way to resolve if this dimension IS a problem) but most people have not reported having to do that. It's usually plug-and-play.

And worth it.

[Mr. Goodwrench]

I believe that a Dometic 310 only requires 10". I installed a 310 in a previous trailer and in my research I saw that a 320 needed 11" and I didn't think it would fit so I went with the 310 and had no issues.