We have a A3000 Trevi Therm built-in thermostatic mixer, about 17 years old. Images attached of existing unit. In the process of updating the bathroom - removing & replacing tiles, new walk in shower etc. To compliment the updated look, also want to replace the front cover plate & handles of the mixer (the bits you can see, basically). Everything else (location on the shower wall, cartridge & all mechanism concealed within the wall) to stay as is. Is this actually possible?
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