Did the trick! Needed a long but sturdy tension rod to replace the sliding doors in a closet. Because of the sliding grooves, I couldn't use the bracket for the middle that came with it, but so far the tension itself enough. 

PLEASE NOTE: If you don't look closely enough, you'll miss that there is a tiny Allen wrench in the back of screws (for that mid-bracket). If your curtain doesn't fit over the endcap, you can use the wrench to remove the endcap.