On-Line Catalog : Ceiling Radiation Dampers > Wood Truss > CFD-521-BT
Model CFD-521-BT 1 and 3 hour — ceiling radiation damper R-6.3 or 8.0 insulated outlet box — butterfly style blade
Application
The CFD-521-BT ceiling radiation damper employs butterfly style blades for point-of-origin control of radiant heat in HVAC systems. The CFD-521-BT is installed horizontally in the ceiling membrane of combustible and non-combustible assemblies with a fire-resistance rating up to and including 3 hours.Documents
- Access Doors & Panels
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- Electric - 2-position / spring return
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- Electric - modulating / spring return
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- 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
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- Technical Information
- CAD Drawings
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- Installation Instructions