11.25" or more will work.
At 12.0" the toilet will have 0.75" behind the toilet.
At 11.5" you will have 0.25" behind the toilet.

: This seems to be a fairly common problem, but I am still confused.
: My rough in (middle of bolts to finished wall) is 11.5 inches.
: The Toto Ultramax is a 12 inch rough in, though there is clearly
: some space between the back of the toilet and the wall in the spec
: drawing. Will this toilet fit in a 11.5 rough in (snug against the wall, of course)?

• Re: 11.5 inch rough in for toilet, will a Toto Ultramax fit? azbidr 20:58:28 04/09/04(0)