Abstract: A flame and fire resistant ventilation device includes a mesh element having a plurality of vent openings dimensioned to quench transient flames, a swelling element formed of or coated with an intumescent material, to permanently seal the ventilation device during sustained fire exposure, at least one heat sink body providing a surface for absorbing and dissipating heat, at least one heat storing capacity element associated with the heat sink body to prevent fire spread by sustained direct exposure to flames, and a heat insulating structure to prevent fire spread through the ventilation device by heat conduction, at least for the initial period of swelling of the swelling element.

Abstract: Fireblocking device for preventing transfer of fire through ventilating apertures or similar passages, in openings for thermal fire ventilation, in ventilation ducts, in process plants or in vented facade exteriors, in vented fire blankets, vented fire protective curtains or vented protective screens against explosions. The device includes a combination of a heat absorbing and heat storing body, and an element which includes and/or adsorbs and intumescent material.