To make a long story short: It fits! In the vast majority of cases, anyway. Our bidets work on all toilets, as long as the water connection is outside and there is about 2.5 cm space around the bowl. If you have any questions, just send us a picture of your toilet by e-mail and we will check if the connection is possible: hey@popotti
You can download our instructions directly here.
How a connected bidet (butt shower) with our ottoman looks like you can see in the pictures below.