Does NOT work with anything less than 12” rough in. We had an 11” rough in and after days of looking at toilet reviews and QA’s we found this one that said it would work with a rough in less than 12”. This is not true anymore. We called Swiss Madison and they said there was a design change within the last year and it will only work with a 12” rough in now. We are pretty disappointed because we ended up changing our rough in to 12” anyways so we could have gone with something else. This toilet is pretty small but our bathroom isn’t very large so not the end of the world.  The seat is ok but I agree with some reviews that it’s not the most comfortable. It’s very modern looking and we’ve gotten a lot of compliments on it already so we are pretty satisfied.