Intumescent Triple Fin

Fire & Smoke by Pyroplex

  • • BS 476 part 20:22
  • • BS 476 part 31:1
  • • Protects against fire
  • • Protects against smoke
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Pyroplex’s triple fin range is fire tested to BS 476: Part 22: 1987 and smoke tested in accordance with BS 476: Part 31: 1987.

On top of this, it gives customers an acoustic edge over traditional fire and smoke seals by utilising three fins which also prevents noise transference. Fins are sometimes preferred over brush pile for this reason, as well as being more favourable in environments like hospitals, computer rooms and food preparation areas.

Thermally-fused fins ensure greater performance and significantly decrease the chance of delamination.

This seal is especially beneficial in an acoustic double door configuration, where it can be used as an acoustic equivalent to the NOR720 at the meeting stile. For more information about acoustic configurations, please visit

2100mm Codes
Size Grey Black Cream Red Brown White
15x4 154TFG 154TFBK 154TFC 154TFR 154TFB 154TFW
20x4 204TFG 204TFBK 204TFC - 204TFB 204TFW


3000mm Codes
Size Black Brown White
15x4 154TFBK-3000 154TFB-3000 154TFW-3000
20x4 204TFBK-3000 204TFB-3000 204TFW-3000