10'' Rough-In Toilet Question
I need a toilet in a newly-enlarged bathroom where there's not much back-to-front depth available if you want door clearance. The usual way to deal with this is to use a "compact elongated" toilet with a slimmer tank, or a round bowl which I'm trying to avoid. But I see that standard 2-piece elongated toilets are often almost 2" shorter depth if you get the 10" rough-in version instead of the more common 12". Typically, the bowl is the same for both, but the tank is specific to the 10" rough-in model. Which makes me wonder, where does that extra 2" come from? That is, since the same bowl is used but the 10" r/i tank repositions the bowl respective to the tank, will the seat not open as far past vertical as usual and be prone to crashing down as a result?