Rack Mount Fiber Distribution Patch Panel with Splice Trays, Slide-Out, FDU, 4UAdapter panels and pigtails are NOT included. Description Rack Mount Fiber Distribution Patch Panel with Splice Trays, Slide Out, 4RU, Up to 288 Splices This rack mount fiber optic patch panel is a 4 Rack Unit (4U 4RU) high density distribution unit that provides high density fiber capacity of up to 288 fibers when utilizing 12 of our LGX type LC quad adapter panels. Included with this Fiber Patch Panel are twelve 24 fiber splice trays. This panel