Make sure to check all parts required before you purchase when buying this shower head Castia™ by Studio McGee.

Great! This replaced another valve and worked perfectly.

I timely returned this part in early December. I am still awaiting a refund.

Great product, works well, looks great, fit perfectly

BUYER TAKE NOTICE - INCORRECT HOLE SIZE SHOWN IN INSTRUCTIONS I purchased what I expected to be a quality product from a well-respected manufacturer - KOHLER but am sadly disappointed. This intended to replace an old 2-handle shower faucet system on a fiberglass shower enclosure. The instructions show that in order to install the plastic template, the first step is to drill a 4" (102mm) hole in the wall. This hole supposedly allows enough spacing within a 4-1/2" radius to drill and install 4 screws through the wall and in to the template. This is intended to hold the template and valve body tight and at the proper depth for later installation of handles and faceplates. As per instructions, I drilled a 4" hole. However when putting the template in place, the mounting holes fell well within the 4" diameter making it impossible to mount the template as intended. Perhaps I misread the instructions but they are misleading at least if not completely incorrect. Kohler also promotes a video which I believe also mentions the 4" hole. Probably a 3-1/2" hole would work but I'm not sure that would provide enough space to install/remove the valve body in the future. I will probably resort to mounting the valve body to a 2x4 at the correct spacing. A simplified mounting system KOHLER should consider would utilize a mounting ring that could fit on the inside of the wall with a larger OD and 4 aligned holes for the screws that would hold the template in place if a larger hole is drilled. Off to a disappointing start