KROSS AIR manufactures Smoke & Fire Dampers, which are designed to stop the spread of fire through ducts or walls in central air conditioning systems. KROSS AIR’s Fire & Smoke Dampers provides an automatic
means of localizing areas of fire in ventilation system with Match Net building management systems (optional).
Damper Features To prevent the distribution of the fire through HVAC ducts, KROSS AIR Motorized Smoke and Fire Dampers (MSFDs) offer an effective fire barrier maintaining integrity in a fire situation up to two to four hours rating and this is combined with low leakage characteristics KROSS AIR MSFDs are suitable for installation in sheet metal ductwork, or walls or ceiling slabs made from concrete or brick. KROSS AIR MSFDs are fully welded in construction and are rated 2 to 4 hour fire rating construction with optional fusible links used are either thermally, electrically or mechanically operated having fire ratings of 68°C (160°F) / 72°C (169°F) or 100°C (190°F) to suit as per site requirements. All dampers are manufactured in compliance to international standards and the company’s quality control and quality assurance procedures and are confirmed to NFPA 90 A and UL 181 standards for erosion.
NFPA requirements
NFPA requires UL (Underwriters Laboratories) classified fire dampers as follows.
c 1-1/2 hour classified fire dampers are appropriate for use in walls, partitions and floors having fire resistance ratings of less than 3 hours. (NFPA standard 90A). c 3 hour classified fire dampers are appropriate for use in walls, partitions and floors having fire resistance ratings of 3 hours or more. (NFPA standard 90A).
Test Reports c KROSS AIR Fire Dampers are tested by Civil Defence Forensic Lab, Abu Dhabi for two hour testing and found satisfactory. And also having local Civil Defence Authority Approval. (Dubai and Abudhabi)