UL555C Ceiling Radiation Dampers

Maximum Size Duct Connection Product Sheet CSI Specification Installation Instructions Revit Files
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 - PDF Doc PDF RFA
CFD-15-LP 3 - Low Profile Butterfly 24 x 24 - Optional Standard Optional - PDF Doc PDF RFA
CFD-15R 3 - Round Butterfly 24 - Optional Standard - - PDF Doc PDF RFA
CFD-15-SB 3 - Single Blade Butterfly 24 x 12 - Standard Standard Optional - PDF Doc PDF RFA
CFD-20 3 - Curtain 24 x 24 - Optional Standard Optional - PDF Doc PDF RFA
CFD-521 1 - Butterfly - 18 x 18
24w or 20h ≤ 324 in2
Standard - Standard - PDF Doc PDF RFA
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
PDF Doc PDF RFA
CFD-521-IP 1 - Butterfly - 16 x 16
24w or 20h ≤ 256 in2
Standard - Standard R-6.5
or 8.7
PDF Doc PDF RFA
CFD-521-NP 1 - Butterfly - 16 x 16
24w or 20h ≤ 256 in2
Standard - Standard - PDF Doc PDF RFA

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UL555C and UL555S Ceiling Radiation Smoke Dampers

Maximum Size Duct Connection Product Sheet CSI Specification Installation Instructions Revit Files
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 - PDF Doc PDF RFA
CFS-172 3 2 3-V 12 x 12
24w or 12h ≤ 144 in2
- Standard Standard Optional - PDF Doc PDF RFA

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