Optical box for easy connection of 2 optical cables (max. diameter 13mm), mounting up to 12 optical welds and mounting up to 12 pigtails. Secure fixation of connected cables/pigtails and protection of optical welds. The inner space of the box is divided into a section for fixing up to 12 optical welds + connecting up to 12 optical pigtails and a space for connecting cables + looping optical fibres. Removable cover with lock. Easy installation and maintenance. Suitable for OH4320, OH6425, OH7525 and OH8625 series switchboards.