I'm imagine if it was a different class of ship, it would also have different jeffries tubes. I think the Enterprise, Defiant, and Voyager tubes are all styled differently, but consistently with their ship. Not to mention the DS9 tubes would have to be different because they were designed by Cardassians (and built by Bajoran slave labor).
Different ships have different size requirements. There's lots of space in a Galaxy class starship, so the tubes can afford to be bigger (and thus easier for people to crawl through). The Defiant is a very utilitarian ship, so space is at a premium and thus the tubes are smaller.
They just want to have some fun! (lemmy.zip)
Lieutenant Yar won't be joining us for the rest of her life (startrek.website)