Size: Each shelf divider is 20.5cm high and 28cm long. Suitable for shelves up to 2cm thick (more than this thickness may cause cracking). we used high quality materials to make sure the shelf dividers are highly flexible, don't worry it will fracture within the specified range. High Quality: Clear Acrylic Shelf Dividers are made from thick, high quality acrylic material, which is stronger, more transparent, lighter and safer than glass, wood or chrome closet partitions. Easy to install and there is no trace after removal. Their transparency and simple design will suit any home, office, shop or kitchen. Versatility: Our cabinet dividers can divide cabinet shelves, cutlery shelves and various other shelves into different functional areas so your items are organized and look neat and tidy. By using the cabinet dividers, you can maximize closet storage space and easily organize items. Features: The edge of the acrylic shelf dividers is highlighted 2cm (the thickness is normal, please do not press it, otherwise it will cause cracks). You don't need any tool installation Just slips onto your shelf If you are using the cabinet, you need to determine if the cabinet can fully close the door. But we tested, our shelf dividers are applied on most cabinets.