Does this knob have temperature increments on the dial? It looks like there are markings on the actual knob and on the trim piece. Are they separate?A. The Grohe 19 612 does have temperature increments on the dial only (what you see on the trim is a reflection).
Will this trim work with Grohe 35 026?A.
The Grohe 19 612 requires either the 34 331 or 34 397 rough-in valves.