Features: 1. It is a Nude building blocks frame, lightweight and convenient disassembly, which can be stacked. 2. Easily assembling with the simple structure, you can fully experience the fun of DIY. 3. Made of high-quality 20* 20 aluminum alloy, steady for use. 4. Open frame design has good heat dissipation performance. 5. Support ATX ordinary large power supply. Specification: Type: Blocks Bare Frame Applicable Mainboard: ITX (17 * 17cm/6.7 * 6.7in) Power: ATX Heat Dissipation: Nude Assembly: DIY Extended Hard Disk Position: 1pcs PCI Extended Card Slot: 2pcs Switch Interface: Start/restart switch and indicator light Material: Aluminum Alloy + Acrylic Accessories Size: Approx. 315 * 210 * 154mm/12.4 * 8.3 * 6.1in Color: As Pictures Shown Weight: Approx. 907g Package list: 3 * Black Brackets 2 * Red Brackets 1 Box of Auxiliary Means 1 Pack of Screws 1 * Installation Instructions 1 * Accessories Instructions Note: 1. The computer case needs to be installed by yourself. Please be patient and assemble according to the instructions. 2. Some panels are designed with one-time disassembly, which should be considered carefully before starting. 3. The main board is ITX structure, the size must be 170*170mm or less. 4. Regular maintenance of acrylic panels will maintain the original bright after tear off the film.