Our fire damper (bfd-cs) with en 1366-2:1999 eis 120 certification and ce market. E: integrity I:insulation S:smoke leakage 120 â?? value in minutes of eis classification periods (120 minutes resistance). Fä±re damper is a part of fire wall and it must be closed during fire.Fire dampers should have thermal sensors. The damper has special gasket providing tightness between wall and casing, intumescent gasket, 30 mm thick calsium silicate board, high temprature resistant silicone. -
