Phones Storage Cabinet: This mobile storage box offers ample space to store multiple phones securely, suitable for storing all kinds of phones, each grid has a digital code, which makes it easier to find and takeQuality Material: Phone Pocket Chart Storage Cabinet is made from stainless steel, this storage box is designed to withstand daily use in busy classroom environmentsTransparent Door with Lock: The transparent door design allows for easy visibility of the contents inside while the lock comes with 2 keys ensures that the stored phones are secureWith Handle: Phones Storage Cabinet with handle, portable and easy to carry. Wall mounted design, with hanging holes on the back, which can be installed on the wall, and it is easy to installEssential Classroom Accessory: This phone storage box is a must have for middle and high school classrooms. It's ideal for storing phones during class Specification: Material: Stainless steel Size Chart: 12 Slot: 21 cmx20 cmx26 cm/8.27 inchx7.87 inchx10.24 inch24 Slot: 26 cmx20 cmx37 cm/10.24 inchx7.87 inchx14.57 inch Package Includes: 1 Phone Storage Cabinet2 Keys2 Screws2 Expansion screws Note: Please allow slightly errors 1-2cm differences due to manual measurement.