Apr 18, 2019 - 07:31 AM
Thank you for contacting Biobidet Support.
We really appreciate you asking prior to your Elite3 purchase, this saves a lot of headaches down the road for yourself.
There are many toilets that are compatible that allow for proper clearance on the sides and also to the front of the toilet tank. Things to look for that will not allow for proper fitting is deep french curves, curved toilet tanks and but no limited to small spacing from bolts holes to the front of the toilet tank.
Follow this link to the Kohler brands list of good and bad toilets. This page will also show how to take proper measurements of any existing toilets.
Source: Toilet Types and Sizes