Rack Mount Case 4U Extra Deep ( 26" ) CRM-4U-WT-8166 Drive Bay & Slot: 3x5.25" Open, 1x3.5" Open, 2x3.5" Hidden, 7 Slots Power & Cooling: Regular ATX Power Supply ( Sold Separately ) Power Fan: 1x 8cm, Case Fan: 2x 9cm Dimension: MB Size:12"1/4(W) x 13"(D), Case Size: 17"1/8(W) x 7"(H) x 26"(D) Weight: N.W.:37lbs, G.W.:47lbs 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 )