The Shelf Divider Kit is a great way to organize your shelf space, providing your customers with clean, organized store shelves. Each kits contains ten 10 shelf dividers and 10 adhesive rails. The rails attach to the front and the back of the shelf, while the polycarbonate dividers snap onto the front rail and notch onto the back rail using the precut slots in the dividers. The dividers have vertical grooves in them that correspond to standard shelf depths. Snap off the back of the divider along the corresponding groove to fit the depth of the shelf. Each shelf divider is 24" long x 4.75" high.