[pasayten]

Our 2021 Cougar 26RBS had the standard "round" Dometic 310 toilet... Saw on this forum or somewhere about the Dometic 320 elongated... You just needed an extra 1 1/2 in back for it to fit. Fortuneately our trailer did. Just a unbolt and swap... very easy. I also added the optional spray attachment for cleaning. This toilet also has a full rim on it so you don't have to worry about water splashing out when traveling... Wife is very happy! :-)