The open air computer graphics cards rack holder is convenient and practical, with excellent texture, and without being easily damaged. The craftsmanship can serve you well without breaking easily. This is a very practical open air computer component holder. Features -Color: Black. -Material: Cold-rolled sheet. -Size: About 50.00X26.80X24.00cm/19.65X10.53X9.43in. - The rack can fully protect GPU and other electronic components. - Support ATX power supply and multiple cooling fans for stable operation. - Used to protect the GPU and electronic equipment, to keep all cables clean and orderly, as well as all items in your mining machine. - Good craftsmanship and materials ensure its durability and practicality. - Special design and it is in fine craftsmanship. It is the best replacement for your old, broken one. Note: Motherboard size: 305x245mm (not included). Graphics specifications: graphics length is not limited, support 6 cards 81MM, 8 cards spacing 61MM. (cards is not included) Heat sink: CPU heat sink height 95MM (not included). Support power supply: support ATX power supplies, support extended power supply (not included). Storage device: SSDX2andHDDX1(not included). Fan specifications: 12CM fan X4(not included). Screw usage: Fixed rack 12PCS, fixed graphics cards 8CPS, fixed power supply 4PCS. Package list: 1 x graphic cards bracket 9 x hexagonal columns 11 x motherboard screws 35 x hexagonal screws