UL555C Ceiling Radiation Dampers |
Maximum Size | Duct Connection |  |
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| Model | Fire Resistance Rating(Hr) | Leakage Class | Blade Type | Roof/Floor Ceiling Assemblies | UL Rated Wood-Truss Assemblies | Sleeve / Outlet Box | Top | Side | Outlet Box Insulation Value | ||||
| CFD-15 | 3 | - | Butterfly | 24 x 24 | - | Optional | Standard | Optional | - |
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| CFD-15-LP | 3 | - | Low Profile Butterfly | 24 x 24 | - | Optional | Standard | Optional | - |
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| CFD-15R | 3 | - | Round Butterfly | 24 | - | Optional | Standard | - | - |
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| CFD-15-SB | 3 | - | Single Blade Butterfly | 24 x 12 | - | Standard | Standard | Optional | - |
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| CFD-20 | 3 | - | Curtain | 24 x 24 | - | Optional | Standard | Optional | - |
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| CFD-521 | 1 | - | Butterfly | - | 18 x 18 24w or 20h ≤ 324 in2 |
Standard | - | Standard | - |
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| CFD-521-90 | 1 | - | Butterfly | - | 12 x 12 14w or 10h ≤ 144 in2 |
- | - | - | - |
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| CFD-521-BT | 1 (UL Wood Truss) 3 (Ceiling Assemblies) |
- | Butterfly | 12 x 12 24w or 24h ≤ 144 in2 |
12 x 12 24w or 24h ≤ 144 in2 |
Standard | Standard | - | R-6.3 or 8.0 |
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| CFD-521-IP | 1 | - | Butterfly | - | 16 x 16 24w or 20h ≤ 256 in2 |
Standard | - | Standard | R-6.5 or 8.7 |
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| CFD-521-NP90 | 1 | - | Butterfly | - | 12 x 12 14w or 10h ≤ 144 in2 |
- | - | - | - |
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| CFD-521-ST | 1 | - | Butterfly | 16"x14" | - | Standard | - | Standard | R-6.5 |
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| CFD-521-NP | 1 | - | Butterfly | - | 16 x 16 24w or 20h ≤ 256 in2 |
Standard | - | Standard | - |
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UL555C and UL555S Ceiling Radiation Smoke Dampers |
Maximum Size | Duct Connection | |
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| Model | Fire Resistance Rating(Hr) | Leakage Class | Blade Type | Roof/Floor Ceiling Assemblies | UL Rated Wood-Truss Assemblies | Sleeve / Outlet Box | Top | Side | Outlet Box Insulation Value | ||||
| CFS-171 | 3 | 1 | 3-V | 12 x 12 24w or 12h ≤ 144 in2 |
- | Standard | Standard | Optional | - |
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| CFS-172 | 3 | 2 | 3-V | 12 x 12 24w or 12h ≤ 144 in2 |
- | Standard | Standard | Optional | - |
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