Just got delivery of my Hansgrohe shower parts, and I have a question about mounting the valve. It is a Thermobalance II, you install the "rough-in" first and add the thermo-cartridge and trim after everything is all finished.

There doesn't seem to be any way of mounting this thing to my framing. I was imagining some sort of ears with holes so I could screw it to some blocking between the studs, but there is nothing like that on the valve. About all I can think of is to strap down the pipes that attach to it, but it doesn't seem right to me?