Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Is this a tension rod, or does it have to be screwed into the walls?
Document: Just what we expected. we were not disappointed. Very easy to install. recommend this highly to everyone looking for a curved shower rod.
I was happy with installation and use of the rod. I would buy this product again because of way it works for the tub.
Love this shower rod, curved to give more head and arm room while using the shower. Easy to install and looks great!
Shower rod went on as described. An easy project. Just be sure you have the ends correct when you mount them, as one end is larger than the other (because one rod is larger so that the other rod fits inside of it). Looks great and the joint where one rod fits inside of the other one is minimal and doesn't cause the hangers to jam up when the curtain is pulled over it.
I just installed this in our new home. Easy to install and looks fantastic. Looks much richer installed than the pictures can do. Happy wife Happy Life
Answer: Has to be screwed into the wall