This premium 19 inch rackmount fiber optic enclosure is 4U in height, has a latching slide out tray for easy access and accepts up to three LGX fiber MPO cassettes or LGX adapter panels. It is used to interconnect house LGX cassettes or fiber splices and terminate fiber cables. The unit comes with twelve 24-fiber splice trays, 288 splice sleeves, two blank adapter panels, mounting ears and tie-downs. Fiber adapter panels and LGX cassettes are sold separately.