I tried to do a search because surely someone has asked this, but I didn't find anything. We bought a 2017 Bullet 247BHSWE (our first RV). We don't get it till next Friday, but of course I'm alread...
Our TT queen mattress is near enough, that our home queen sheets fits corner to corner; but even with the foam pad we added, the thickness is too thin and we have to tuck the bottom of the fitted sheets under.
Like many things, the TT industry plays fast and loose with dimensions.