Bought both a 3 foot long and an 18" long.  Put the bigger one across the long wall of the tub wall and the smaller one vertical as you get out of the tub.  6 pages of instructions looked like it would be difficult but we had a contractor put them in since he was here doing other work.  He said it made his week to use this product as he didn't even know it existed.  He usually shys away from grab bars because of cutting through tiles but he loved this.  He said it was not difficult or tedious.  Next thing we knew, mom is now safely taking showers in our bathtub. (she got quarantined here and we don't have a walk in shower like at her senior community).  We bought the white ones since we had white tile and she prefers them to the ones in her apartment which are chrome.