About this item Super Magnetic: Our magnetic book shelves for classrooms feature a larger and thicker magnetic strip (17×1.6in), providing strong adsorption with a load-bearing capacity of up to 8.8lbs (4kg). They’re solid, reliable, and won’t fall off during use. Premium Material: Crafted from thickened acrylic, these magnetic book shelves are lightweight yet sturdy, offering durability that won’t easily break. They’re easy to clean, making them perfect for staying organized in classrooms or at home. Multi-functional: Each magnetic book holder comes with a magnetic pen holder, offering a convenient solution for storing pens, board erasers, and other tools. This design helps keep your teaching space tidy and organized. Easy to Use: Simply attach these magnetic book shelves for whiteboard to smooth magnetic surfaces for quick and convenient installation. Before use, remember to remove the protective film on the surface for optimal performance. Ideal Size & Secure Packaging: Measuring about 17×2.2×2in, our magnetic display shelves hold plenty of books, rulers, and board erasers. They’re carefully packaged with bubble film and paper box to minimize the risk of damage during transit.