Rack Mount Case 3U Black ( With Door ) CRM-3U-BK-D Drive Bay & Slot: 2x5.25" Open, 1x3.5" Open, 2x3.5" Hidden, 7 Slots Power & Cooling: 3000w Power ATX AMD/P4 (Power Fan: 1x 8cm), Case Fan: 2x 8cm Dimension: MB Size:12"1/4(W) x 13"1/4(D), Case Size: 16"3/4(W) x 5"1/4(H) x 24"1/8 (D) Weight: N.W.:29lbs, G.W.:39lbs Matching Sliding Rails: N/A (We do not have a set of matching Sliding Rails for this case but however you can modify our CRM-SL26 by drilling 1 extra screw hole to make it work. These rails are sold separately )