DescriptionReviews Description EI90-S and E120-S series, CE certifiedFD 300 fire and smoke damper, which automatically closes in less than 30 seconds after contact with fire, is also insulated against heat and flame.It keeps the temperature difference between the two surfaces of the wall and the damper within specified limits.'cold smoke' when there is no fire and very small leakage class at 300 Pascal pressure for 120 minutes during fire. Reviews Be the first to review this item There are no reviews yet