According to my plumber, not compatible with Kohler guts. Liked the look, but had to return.

Beautiful trim kit and good quality if you have the correct American Standard valve, did not work for me and will be returning.

This is a nice looking shower trim kit, but I didnt realize that the install wasnt standard across all brands. This American Standard fixture was not compatible with the plumbing and screw holes in our current Delta fixture. I have to return this item and purchase a Delta in order to avoid replumbing the mixing valve connection.

I love this style of it and the functionality. It was perfect for the remodeling of my shower.