There are 24 zigzag slots for installing Armored/Unarmored Keystone jacks. A zigzag-shaped arrangement ensures that the cables are relaxed and not too congested. In addition, by moving the ports slightly away from each other and disrupting the order in the cables, the ports and cables are prevented from transmitting signal (interference) to each other at high speeds (10 Gbps and above). Chassis raw material: SPCC, 1.0mm Cold Rolled Carbon Steel acc. JIS G3141-1996Green wrapped ground cable comes with the product. Can be mounted in a 19 inch cabinet. 1UE has areas for attaching labels. Black RAL 9005 color