The modular distribution box OMP 19 '' 3U Q-Fiber consists of a chassis (rack mount box) and blade modules used for the organization of fibre optic cables. The box is designed to accommodate up to twelve blade modules. Cassette module is a solution that allows for easy management of connections within a single distribution frame. Thanks to the modular system can be developed up to 288 fibres. Cassette modules are mounted to the chassis with screws integrated into the front panel, which allows for very fast assembly and disassembly of modules, without the need for additional tools.