Hi Peggy,
It can vary widely based on what kind of window you have now (aluminum, wood, vinyl, etcl) as well as if you have brickmould casing on the exterior etc. It can be up to 5" different. Just ... read more
Call a plumbing professional. That way the toilets can be evaluated. You would not want to flush money down the drain on repairs if you are going to have to end up replacing the toilets in the near ... read more