This works for the following SimpleHuman shower caddies. https://goo.gl/T1tMdA https://goo.gl/aecVIM https://goo.gl/Br8iXe Might work with other future models as long as the frame profile is the same. I made this because the toothbrush holder opening is too wide, and my toothbrush constantly falls out. So i made one with smaller opening. Note that this is all one piece, it is designed with a flat side. When you install it, rotate it so the flat sides are parallel with the frame, once the groove is in place, simply rotate to the right orientation.