4U Fiber Enclosure Adds Up to 28 High-Density Cassettes to Your Rack InstallationMake the most of your rack space by inserting up to 28 Tripp Lite N482-Series fiber cassettes (sold separately) into this high-density enclosure panel, allowing you to patch as many as 336 duplex LC ports (that''s 672 fiber connections). Mounting in 4U of space in your EIA-standard 19-inch rack, this fiber enclosure comes with an optional rear-mounting cable management bracket for proper organization and routing of cabling. A removable fold-down door panel in front protects your connections and rotates out of the way to provide full access. The Smart Solution for Interconnecting 10GbE, 40GbE and 100/120GbE Network EquipmentCassettes come in multiple variations, and the heavy-duty steel N482-04U lets you interconnect any combination of 10 Gb, 40 Gb and 100/120 Gb network equipment, giving you the flexibility to adapt as your technology changes. This fiber enclosure seamlessly connects to your existing cabling infrastructure. It supports a wide range of singlemode and multimode applications and fiber protocols in high-density telecom and data center environments.