These are wonderful for organizing drawers in you bedroom, kitchen, bathroom, closet, office or anywhere you have drawers. They have a strong secure hold and are 4” high and expand from 11” to 17. They slide and have a simple one click installation with no tools or glued required. You simply lift the lever, place in the drawer, adjust to fit and lock in place. Powerful spring tension locks each divider in place and stays upright.