Features: Crafted from high-quality aluminum alloy material, this case offer excellent durability and protection for your RaspberryPi4 mainboard. Increasing the large cooling column allows for better heat dissipation. Design with good heat dissipation,with the cooling fan and heatsinks. Easy installation and all hardware is included Widely used for roboticsproject, or experimenting with IoT applications, this case provides reliable protectionand optimalheat management for your RaspberryPi4 4B. Specifications: Type:Aluminum Alloy Housing with Fan Heatsinks Model: for RaspberryPi4 Mainboard Case Enclosure Size: approx 88x56x21mm/3.46x2.2x0.83in Fan Size: approx 30x30x7mm/1.18x1.18x0.27in Color: Black / Silver Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 PC x Aluminum Alloy Case