Device for sealing a wall/ceiling opening comprises an intumescent foam ventilation brick inserted in the opening, and a shutting flap designed as a centrally positioned membrane movably arranged in one direction in the opening

摘要

Device for sealing a wall or ceiling opening in a smoke- and fire-resistant manner comprises at least one ventilation brick (15) inserted in the opening (12) and consisting of a material (intumescent foam) which foams at high temperature. At least one shutting flap designed as a centrally positioned membrane (10) movably arranged in one direction in the region of the opening blocks the passage of air through the opening. Preferred Features: The membrane is made of a rubber-like flexible material.