Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Do you sell extension bars for this unit?
Document: I am so happy to say that this a great shower. I had been looking and looking and had resigned myself to the fact I was going to have to pay $1000+ to get a shower head that had both rain head and handheld functions that was nice looking when I came across this. There were no reviews and I noticed it was coming directly from China but I decided to give it a chance given the price.
), was easy to install, works very well and looks great. I am thrilled. Note that we are using for an outdoor shower and it is perfect for that.
Answer: no