Commercial shower system trim kit includes metal valve trim, wall supply (with 1/2 in FNPT inlet and 1/2 in NPSM male outlet), a 59 in metal shower hose, vacuum breaker, a 3-function hand shower with non-positive shut-off, diverter tub spout and a 36 in slide bar. One piece double ceramic pressure balance cartridge maintains a constant output temperature in response to changes in relative hot and cold supply pressure. Integral check valves prevent cross flow. Adjustable hot limit safety stop. Back-to-back capable. Durable valve trim with metal handle and escutcheon. Slide bar features an adjustable hand shower holder which can be set at any height or position along the bar and angle up to 45 deg.