Welcome to our shop! The cooling enclosure we offer has a reasonable structure, providing a large heat dissipation area and ensuring a good cooling effect. It is made of aluminum alloy material, which is wear and corrosion resistant, and can maintain its shape for a long time. This heat dissipation enclosure is specifically designed for the Raspberry Pi 4 B Model, with suitable ports and slots that allow for easy access and usage. The enclosure has a well-thought-out hole design that perfectly matches the Raspberry Pi without interfering with its functionality. To make installation and disassembly effortless, the enclosure comes with fasteners such as screws and a wrench. Its sturdy structure ensures stability and prevents it from falling apart easily. Product Details: - Item Type: Enclosure for Raspberry Pi - Material: Aluminum alloy - Application: Suitable for Raspberry 4 B Model - Product Size: Approx. 87 x 56 x 25mm / 3.4 x 2.2 x 1in - Included in the package: 2 x Enclosures, 4 x Stickers, 4 x Screws, 1 x Wrench 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service. Thank you for choosing our shop!