How does this product vary to Grohe 28 917?A. The Grohe 28 574 and the 27 917 are different styles. They both carry the same great Grohe name
If I am using this with the Grohtherm 3000, will I still need a wall supply elbow?A. The Grohe 28 574 needs to have the hose connect into an elbow or shower arm something with a 1/2" connection
Can you change the angle of the shower head?A.
The Grohe 28 574 showerhead is adjustable. You can change the angle of the head.