The intumescent FTR grilles allow natural ventilation through  compartimentation elements. They expand at a temperature of 120ºC, sealing the ventilation opening.Grille constructed from sodium silicate covered in PVC.

Tested according to the general requirements of EN 1363-1, complying with the criteria of integrity against fire and thermal insulation for a time of 60/120 * minutes (EI 60 / EI 120) according to the test standard EN 1366-3.