Book stand that won't fall over even with just one book A4 / A3577-24 Black 1 unit

●Size: Width 20.3 x Depth 15 x Height 21.2 cm, Minimum height: 12 cm Weight: 450g ●Material: High impact polystyrene ●Number of books per case: 24 - A book stand that prevents adjacent books from falling over even when a book is removed. - For organizing books and magazines you often read. For tidying up picture books and sketchbooks. For organizing files and notebooks. - The top and bottom stoppers firmly support the book, preventing adjacent books from falling over even when a book is removed. -Can be connected with joints on both sides without additional parts. Can also be connected with the regular size. - When you insert a book or something similar from the front, the stopper will rise and the stoppers on both sides will hold the inserted item in place so it won't fall over. - Even if you remove only one book out of several books, only the stopper at the removed book will go down, and the book next to it will not fall over, making it easy to know where to put it back. - Anti-slip rubber feet on the back. *The minimum compatible height is 12 cm (the stand cannot be used below 12 cm as the stopper does not reach the stand sufficiently). *Depending on the thickness of the object you are leaning against, such as something thinner than the stopper (0.86 cm), it may not stand upright.