Features: Multi-sided heat dissipation holes, strong heat dissipation effect. The top cover is also equipped with heat dissipation meshes that only cover the position of the CPU heat sink. SECC material with 0.7MM thickness, selected materials, hot-dip galvanized steel plate, with high corrosion resistance, toughness and no deformation. The heat dissipation design cools at high speed, and has a large number of heat dissipation holes to ensure the stability of the machine during operation and the life of the hardware. brand new and high quality Exquisite layout, more reasonable space. Reasonable interior design, for THN-TX motherboard. Suitable for motherboard: MINI-ITX ultra-thin board (below 17x17cm), only supports motherboards with for DC IN self-powered. Specifications: Color: Black Material: SPCC Size: approx.196.5x19.8x4.5cm/7.74x7.80x1.77in Package Includes: 1PC x Chassis 1Set x mounting screws note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!