General Product Overview - Multi-Blade & True Round Fire Dampers

Home › Product Features › General Products Overview › Air Control Products › Multi-Blade Fire Dampers

| Louvers | Control Dampers and Backdraft Dampers | Curtain Fire Dampers |
| Multi-Blade and True Round Fire Dampers | Smoke Dampers |
| Combination Fire/Smoke Dampers | Ceiling Dampers | Access Doors | Industrial Dampers |
Multi-Blade and True Round Fire Dampers

As today’s modern commercial and industrial building construction becomes increasingly life safety oriented, fire containment and active smoke management systems are being utilized to a higher degree as more sophisticated technology is developed and implemented into building codes. The development process begins with the understanding of fire and smoke behavior through the research and study of real life emergency situations, and culminates in the design, testing of, and ultimate use of new products to better control and manage the ravages of fire and smoke. Thus, resulting property damage is minimized and occupant safety is maximized. Nailor Industries commitment to the development of new and existing fire and smoke control technology has resulted in a comprehensive line of premium quality smoke, fire and combination fire/smoke dampers and accessories, available at a reasonable cost and in a timely fashion. Nailor's ‘multi-blade’ type fire dampers are available in several blade and frame styles including ‘true round’, to suit most applications.

Airfoil Blade Fire Dampers • Vee-Blade Fire Dampers • Round Fire Dampers • True Round Fire Dampers

Dynamic Fire Damper • Airfoil Blade Premium Performance
• Model Series D1200 and D1200-3 provides the ultimate in fire containment for both static and dynamic HVAC systems. The D1200 Series utilizes an innovative inter-locking double skin airfoil blade design that maintains a complete barrier throughout the fire test with absolutely no visible through-gaps. Amazingly, the D1200 Series fire damper gets tighter as it gets hotter! Ideal for use where building codes require a fire damper for the protection of ductwork penetrations in walls or floors. Premium performance, versatility and assured closure make theD1200 Series an excellent choice for the majority of today’s' applications.

Dynamic Fire Damper • Airfoil Blade out of Wall Mounting
 • Model D1201-OW is an "out of wall" high performance fire damper. It is specifically designed for supply or return ducts that terminate at a grille and provides through the grille access to the damper. Standard sleeve length accommodates most commercial supply and return grilles/registers. It offers premium performance and a low pressure drop well suited to the majority of commercial applications. Unique, inter-locking double skin blade design eliminates combustible seals and provides flame protection under fire conditions at temperatures up to 2000°F. TheD1201-OW is supplied as standard with an internal locking quadrant which holds the damper in the fully open position,but may also be used for system balancing if required.

Dynamic Fire Damper • Vee Blade
• Model Series D1250 with sturdy vee style blades an drugged mitered corner hat channel frame design that virtually eliminates racking, provides 1 1/2 hour UL labeled fire protection suitable for use where ductwork penetrates a wall or floor with a fire resistance rating of up to 2 hours. The over-center/knee lock with high torque spring fusible link assures fail-safe closure during fire conditions. The D1250 series is also approved for use in both static or dynamic HVAC system designs. Available with factory fitted sleeve Model D1251 and choice of transition styles, the series is supplied as standard with a manual locking quadrant and is a versatile and economical performer suitable for use in the majority of today's applications.

True Round Fire Damper for Static or Dynamic Systems
• Model 1290F is suitable for use where building codes require a fire damper for protecting ductwork penetrations in walls or floors that have a fire resistance rating of up to 2 hours. It is an economical true round fire damper designed and qualified for point-of-origin fire containment where round ductwork passes through metal stud drywall partitions or masonry walls. Features of the 1290F include the industry proven over-center/knee lock design with high torque spring/fusible link closure which provides fail-safe security under fire conditions. Each damper is supplied as standard with retaining plates for fast secure installation and a hand locking quadrant which holds the damper in the fully open position, but may also be used for system balancing if required.