Profile: Flamgard Engineering Ltd. specializes in manufacturing & designing ventilation products for the petrochemical, oil & gas, industrial, nuclear, tunnel & power generation markets. We also offer a complete design and build service. Our fire dampers are fitted to ventilation duct penetrations of fire and blast rated divisions. They will protect adjacent spaces from the transfer of fire, explosive blast, or smoke ingress via the ductwork system. Blast dampers BLD01 (1 bar) & BLD-02 (0.4 bar) are designed to prevent blast forces entering ventilation duct systems. They are rigidly constructed for this purpose, and comprise of two sections. An 'eggcrate' section directs the blast onto the blade pack, which consequently closes under blast pressure, isolating the blast force and preventing blast damage or loss. The blade open position is adjusted and held by a blast break mechanism.