This box is suitable for the cable to be used in the middleway either in the field or under the ground. The DOS shell is punched with solid FRP which is durable in the abominable climate. Its pressure resistance is above 200Kpa, and temperature range is -40℃～+60℃. A maximum of 4 optic fibre cables and 8 optic trays, which amounts to 96 connectors, can be stored, while the common capacity 36 connectors. Two types, namely vertical and horizontal type.