Horizontal Enclosure with special installation accessories can be used for overhead, underground, pipeline ...etc for wall-mounting. There are optic cable entry and exit holes, which can be used for fiber optic cable connection, cable removal or branch connection installation. The optical cable inlet and outlet holes can be sealed by just wrapping a small amount of sealing tape on the optical cable, which can protect against water and moisture. When repeatedly opening the optical cable connector box, you only need to unscrew the housing screws to open the connector box housing.