The Single Tube Gas Block Housing is a wall mounted unit that is positioned internally at the cable entry point. An incoming external blown tube cable is connected to an internal blown tube cable using a gas sealing connector. The connector is used to seal both populated (with blown fibre bundle) and unpopulated blown tubing to prevent the ingress of gas into the building. The BFGSU is used for internally fed cable or with an OAsys CLI Unit for a cable entering through the fabric of the wall.
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