Clapet coupe-feu électrique 70 ℃/280 ℃ normalement opérationnel...
$188.49Product Description Electric Fire Damper 70℃/280℃ Normally Open Fire 3C Fire Damper Galvanized Regulating Valve Smoke Exhaust 70℃ fire damper: Mainly installed on the supply and return air ducts of ventilation and air conditioning systems. Dans des circonstances normales, the valve is in the open state to ensure the normal operation of the ventilation and air…



























