Vertical Cable Management: Double Slotted Duct 45U45U Vertical Cable Manager Double Sided Features : Made of high quality plastic Removable cover for easy access Couple both sections together to get 45U or use one section with a 20U relay rack Made of high quality plastic and features removable front panel for easy access Flexible fingers are suitable for both copper and fiber cables Mounts on either side of a rack (L R) One unit includes two sections (2X22. 5U)