Solved an issue where the curtain coverage needed to be slightly wider than where the curtain rod could be affixed to the studs.  This expandable curtain rod fit the bill.  All necessary hardware was included and the rod went up easy-peasey.  Now we have separation between a doorless bathroom and the laundry room.  The space is too tight for a door (even a pocket or a barndoor).  We'll be remodeling these two rooms in the future but for now?  Problem solved!