Shower head holder extension

The holder for my shower head is mounted too low for me (or i'm just too tall) so his is just a basic extension to increase the height so i don't have to duck to shower - measurements are fine for my setup, no clue if there is a standard for those things.

printed in ABS with supports, no raft, 20% infill, 0.3mm layers

edit (6/6/16): could use a little more reinforcement at the top... added a model with 3mm thicker outer walls.
marking this as work in progress until i found a good way to r