TBA Firefly NCBR is Fortaglas rope, over-braided with a continuous filament. TBA Firefly NCBR is Permeable.

TBA Firefly NCBR (Non-Combustible Backing ROD) should be used in between panel joints and other joints where non-combustible (AS1530.1) backing rods are required.
TBA Firefly NCBR should be used where a foam backing rod would be typically used.