Pottorff Company Model SIG-CRD Ceiling Dampers are approved for use in fire rated floor-ceiling or roof-ceiling assemblies not exceeding 3 hours for non-combustible construction or not exceeding 1-hour for the combustible assemblies listed below, as an alternative to sheet metal dampers. The maximum number of ceiling dampers in an assembly is based on the approved number of sheet metal dampers in the specified design.
Model SIG-CRD Ceiling Dampers have been approved for use with the following ventilation fans:
Delta Electronics, Inc.
-
SIG80
-
SIG80D
-
SIG80L
-
SIG80H
-
SIG80HL
-
SIG80DL
-
SIG80M
-
SIG80MLED
-
SIG110
-
SIG110D
-
SIG110L
-
SIG110M
-
SIG110H
-
SIG110HL
-
SIG110DL
-
SIG110LED
Model SIG-CRD Ceiling Dampers have been approved for use with the following combustible construction 1-hour rated floor-ceiling and roof-ceiling assembly designs:
-
L521
-
L546
-
L558
-
L574
-
L576
-
L581
-
L583
-
L585
-
P522
-
P533
-
P538
-
P545
Ventilation fans shall be ducted out of the plenum space using any UL 181 Class 0 or Class 1 duct.
