On-Line Catalog : Ceiling Radiation Dampers > Wood Truss > CFD-521
Model CFD-521 1 hour — ceiling radiation damper butterfly style blade
Application
The CFD-521 ceiling radiation damper employs butterfly style blades for point-of-origin control of radiant heat in HVAC systems. The CFD-521 is installed horizontally in the ceiling membrane of combustible floor-ceiling or roof-ceiling assemblies with fire resistance ratings up to and including 1 hour.Documents
- Access Doors & Panels
- Accessories
- Actuators
- Electric - 2-position / spring return
- Electric - floating / non-spring return
- Electric - modulating / non-spring return
- Electric - modulating / spring return
- Pneumatic
- Auxiliary Switch Unit
- Actuator Sizing Chart
- Backdraft Dampers
- Ceiling Radiation Dampers
- Control Dampers
- Fire Dampers
- Fire-Smoke Dampers
- Louvers
- Acoustical Louvers
- Brick Vents
- Extruded Aluminum Louvers
- Combination Louver
- Drainable Blade
- Drainable Head
- Dual-Drainable
- Florida Building Code Approved
- Miami-Dade Certified
- Non-Drainable Blade
- EFJ-245 - j-blade / 2" deep
- EFJ-430 - j-blade / 4" deep / 30°
- EFJ-437 - j-blade / 4" deep / 37½°
- EFJ-445 - j-blade / 4" deep / 45°
- EFJ-645 - j-blade / 6" deep
- EFK-430 - k-blade / 4" deep / 30°
- EFK-437 - k-blade / 4" deep / 37½°
- EFK-445 - k-blade / 4" deep / 45°
- EFK-637 - k-blade / 6" deep
- EFY-245 - inverted Y-blade
- EFY-445- inverted Y-blade
- Operable Blade
- Sand Louver
- Wind-Driven Rain
- ECD-445 - horizontal blade / 4" deep
- ECD-545 - horizontal blade / 5" deep
- ECD-635 - horizontal blade / 6" deep
- ECD-745 - horizontal blade / 7" deep
- ECV-445 - vertical blade / 4" deep
- ECV-545 - vertical blade / 5" deep
- ECV-645 - vertical blade / 6" deep
- EFJ-745 - horizontal front blade with vertical rear blade
- Equipment Screens
- Formed Metal Louvers
- Brochure and Louver Options
- Smoke Dampers
- Technical Information
- CAD Drawings
- CSI Formatted Specifications
- Installation Instructions