Hi I've been having trouble with my shower tub. I am not getting hot water unless I fully open the hot water valve and close the cold but then I am not getting any pressure.

I've determined it is the cartridge that needs replacing the problem is I can't figure out what brand it is. From the picture below you can see the shower valve says "Selection" but when I type that into google nothing comes up.

Any help identifying this for me would be much appreciated.

Thank you

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