The support bracket provides a mounting mechanism for the 220mm plastic duct. It is basically a bracket that connects straight duct (Part No: TC1279-21A) to an M12 threaded rod or any M12 set screw. This bracket replaces an old bracket (same part number) and includes an M12 captive nut, which was not previously provided.
Threaded rod, nuts and washers are available with this bracket as an assembly (Part No: TC1279-13A)