Product advantages 1. It is made of aluminum alloy, safe and firm, with large compatibility, sufficient storage space and free storage. 2. It is suitable for schools, classrooms, conference offices, factories and other places to meet most of the mobile phone storage on the market. 3. The safety lock and digital design make the items not confused and easy to find and manage. If you have any problems after purchase, you can communicate with us. We will help you solve these problems and provide you with satisfactory after-sales service. Product specification -Product name: mobile phone case -Material: aluminum alloy -Color: silver -External dimensions: 12 slots 21×19×26.5cm/8.2×7.4×10.4" 24 slots 26.5×19×38cm/10.4×7.4×14.9" 36 slots 29×19×49cm/11.4×7.4×19.2" 48 slots 36.5×19×49cm/14.3×7.4×19.2" 60 slots 36.5×19×60.5cm/14.3×7.4×23.8" -Installation method: desktop/wall-mounted -Applicable to: schools, conference offices, factories, etc Please pay attention to the prompt 1. About the sales list -------- We only sell mobile phone cases, excluding other references in the picture. 2. About color -------- Due to different camera, shooting light and computer settings, the actual color may be different from the picture. Please refer to the real object, but this is not a quality problem. 3. For the size -------- manual measurement data, please allow slight deviation. There may be a deviation of ≈ 1cm, please refer to the real object. Please understand. 4. About the product -------- Please check the size and color before purchasing. We have many similar popular products. Please click to enter our store. There are many other products that can meet your style and needs. 5. About service -------- We hope you are satisfied with your purchase. If you have any customer service questions, please feel free to contact us, thank you!