CRM-4U-BK-455A02 Rack Mount Case 4U 7 (H) x 19 (W) x 23-inch (D) without Power; 6x 5.25-inch + (3+3)x 3.5-inch + 1x Slim Drive Bay; P/N: RA455A02 Black Color Compucase RA455A02

Rack Mount Case 4U Black without Power Supply with 2x USB Ports on Front Panel
CRM-4U-BK-455A02
Drive Bay & Slot: 6x5.25" Open + 3x3.5" Open + 3x3.5" Hidden + 1x Slim Open, 7 Slots
Power & Cooling: ATX Power ( sold separately ), Case Fan: 1x 12cm, 2x 8cm

or by removing the 12cm case fan to convert to
Drive Bay: 3x5.25" Open + 3x5.25" Hidden + 3x3.5" Open + 2x3.5" Hidden
+ 1x Slim Open ( or 1x 3.5" Hidden with Mounting Kit )

Dimension: MB Size:12"(W) x 13"(D), Case Size: 19"(W) x 7"(H) x 23" (D)
Weight: N.W.:32lbs, G.W.:44lbs, P/N: Compucase RA455A02
Matching Sliding Rails: CRM-SL18, CRM-SL20, CRM-SL26 sold separately