Fiber optic closure belongs to the accommodation of the optical fiber fusion splice section system. It is widely applied to the connection of the fiber play the roles in sealing, protection, installation of fiber connector head and storage. Dome-to-base design; up to 4 pieces splice trays, hinge for access of any splice without disturbing others trays; Fast and reliable sealing performance, easy to package multiple times. With lightning protection grounding device, it can be applied in overhead, wall mounting or directly buried.