The Serin Tub and Shower Trim Kit Trim from American Standard is a clean, simple design, part of the modern Serin Collection. Kit includes pressure-balancing valve, wall escutcheon with lever handle and built-in diverter, and a tub spout. Experience total flexibility in bathroom design with TRIMendous valves and trims. TRIMendous decorative valve trims are all engineered to fit a universal valve making them easily interchangeable. Updating a bathroom shower is now as effortless as simply changing the trim.