LGX Chassis (1U, 2U, 3U) Q-Fiber are rack boxes designed for mounting in a data communication cabinet by means of rack bolts. They have been designed to house from 3 to 12 LGX-S modules (single) depending on the type of box, and from 3 to 6 LGX-D modules (double). The module in the chassis is installed by means of a latching disc. Such solution facilitates very quick installation and dismantling of the ODF, without the need to use additional tools. The LGX system may be used for crossing fibre-optic cables, patchcords and pigtails. It is also a good solution for splitter adaptation and Wave Division Multiplexing Systems WDM, CWDM and DWDM. Thanks to its compact size, it permits a very efficient use of space inside the data communication cabinet.