Fire resistant grill

How does a fire-rated ventilation grill work?

The functioning of a fire resistant transfer grill is based on the dilatation properties of the intumescent materials in the profiles. When the room temperature reaches 100°C, the material expands to attain several times its original thickness. The slats then melt together to constitute a non-combustible mass that procures a fire resistance similar to that of the construction penetrated. This way, it impedes the passage of the flames, heat, and gases.

  1. The intumescent grill is made of horizontal profiles filled with intumescent material.
  2. The fire breaks out and the temperature reaches 100°C.
  3. The intumescent material expands to attain several times its original thickness and thus prevent the passage of smoke and flames.