This open air computer component holder rack is made of , which can withstand use. Features the cold rolled sheet material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. Features -Color: Black. -Material: Cold-rolled sheet. -Size: About 50.00X26.80X24.00cm/19.65X10.53X9.43in. - This Ethernet graphics cards holder rack supports power supply and ATX motherboard. - The distance between the motherboard and the graphics adapter board is wide, which is convenient for maintenance. - It is easy to move and reserve enough space for equipment . - There is enough space between the graphics cards for stable heat dissipation. - It is manufactured with technology to ensure the high- of the product and can work for a long time. 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