MDF Design 1 A MDF Design we did for a customer. We installed fire rated plywood on the walls. Had the plywood painted and then installed our ladder tray. Mounted the rack with isolation kits and terminated the fiber backbone. Terminated our Cat 6 cables running the patch cords to the rack. The Cat 6 cables for all the station cabling. Terminated our Cat 6 cables running the patch cords to the rack. Terminated the copper backbone cabling for the voice connections. Terminated the outdoor copper feeders for the extra building links. The finished MDF.