Features: Crafted from high-quality aluminum alloy material, this case offer excellent durability and protections for your RaspberryPi4 4B 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,support POE hat high case Widely used for roboticsproject, or experimenting with IoTapplications, this case provides reliable protectionand optimalheat management for your RaspberryPi4 4B. Specifications: Type:Aluminum Alloy Housing with Fan Heatsinks Model: for RaspberryPi4 4B Mainboard Case Enclosure Size: approx 95x63x45mm/3.74x2.48x1.77in Color: Black 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. Does not include RaspberryPi4 4B Board Package includes: 1 Set x Aluminum Alloy Case with Fan