The compact 48-junction, with 3 round inlet and 1 oval inlet, optical closure is a passive and watertight F.O. box, which guarantees a high degree of IP protection and therefore impermeability to external agents such as water, dust, humidity and extreme temperatures. It guarantee a resistance capacity range from -40° to 70°. Supplied with splice trays, heat-shrink kits for cable entry and a pole or wall anchoring kit, it is mainly used in hostile environments, ensuring the management and operability of the fiber in safety.