What's the difference between this and the R10000-UNBX? How do I know which one I need?A. The Delta R10000-UNBXT accepts thermostatic cartridges for use with the T17T trims.
it has 4 inlets one for hot water one for cold water one for shower head.what is the one on the bottom for?and can it just be capped off if not in use?A. The bottom is for a tub spout. You can cap it.