Thanks keelhauler (John) for steeping in and providing the dimensions.
Given the slide out is the same one used in both the 2552 and 2351, the dinette inside is 3" smaller than the standard dinette without a slide out like we have in our 2350. Three inches doesn't sound like much, but I feel it could be significant for taller people with longer legs like myself. I am 5'-11" which is exactly the same as our dinette when made into a bed at 71". I can say it works okay for me, but I would appreciate even more leg room. Getting more leg room means getting a longer table which would also be nice. Our table size is fine but more would be better yet. Whatever more you request over 71", that extra amount divided by two, has to be added to the height of your dinette backrest cushions so they fill in the extra length when used to make the bed.
For reference, here is our 2350 no-slide dinette that offers a 71" long bed.
Note how the dinette utilizes the transition/angled wall so it can be made bigger. This is standard practice on every PC model with this condition.
If you wonder, the driver seat can be set all the way back and can recline, but only to a point before making contact with the bench seat behind it. I do not consider it an issue at all.
