Computer case,PC case, ATX Case,Tower Case,Computer parts,Computer peripherals 231: Structure size: 420mm*180mm*415mm(L*W*H)-long version 390mm*180mm*415mm(L*W*H)-short version Carton size: 485mm*240mm*570mm(L*W*H)-long version 485mm*240mm*535mm(L*W*H)-short version 1*40HQ :1250 PCS(long version)/1350 pcs(short version) NET WEIGHT: 6.5KG(long version)/5.5KG(short version) GROSS WEIGHT: 7.5KG(long version)/6.5 0.5MM SGCC or 0.5SECC Drive space: 4*5.25 2*3.5FDD 4*3.5HDD Front interface: USB*2+AUD (included) Handel: H1*1 (optional) or H2( optional) Transparent side panel(optional) Fan space: 12CM*1 front metal panel (optional) 9CM*1 rear metal (optional) airduct (optional) Features: Folded edge, handle screw pci vertilation