You need to use Kerdi with the Kerdi drain (both types), but it will work with either one of their foam pans, or building it out of deckmud. It is a bit more critical getting the height just right. I don't remember if they have a video on that on their site. Safest thing is to call their tech support line for guidance. If you got it for the price of their conventional drain, you got a screaming good deal!