Greenheck Fan Ventilation Hood SSWDR 53 User Manual

SSWDR-53  
Stainless Steel Round  
Backdraft Damper  
APPLICATION  
Model SSWDR-53 is a round backdraft damper  
which may be mounted horizontally for airflow up or  
down, or mounted vertically for horizontal airflow.  
RATINGS  
Pressure:  
Velocity:  
3 in. wg (.7 kPa)  
2000 fpm (10.2 m/s)  
180°F (82°C)  
Temperature:  
STANDARD CONSTRUCTION  
Frame:  
Blades:  
Blade Seal:  
20 ga. (1mm) 304 stainless steel  
24 ga. (.7mm) 304 stainless steel  
closed cell neoprene/EPDM/SBR  
blend  
SIZE LIMITATIONS (available in 1 in. [25mm]  
increments)  
Minimum Size:  
Maximum Size:  
4 in. (102mm)  
24 in. (610mm)  
OPTIONAL FEATURES  
Extended Frame  
Diameter is approximately 1/8 in. (3mm) undersize.  
Extended Frame  
Frame Dimensions  
Damper Model  
Length  
SSWDR-53 Standard Frame  
3.25 in.  
(83mm)  
SSWDR-53 Extended Frame  
L
Length  
“L”  
Damper Diameter  
3.25 in.  
5 in. - 10.999 in.  
(127mm - 279mm)  
7.25 in.  
(184mm)  
(83mm)  
Airflow  
11 in. - 16.999 in.  
(279mm - 432mm)  
10.25 in.  
(260mm)  
Seal  
Springs  
17 in. - 24 in.  
(432mm - 610mm)  
13.25 in.  
(336mm)  
Frame  
Copyright © 2008 Greenheck Fan Corporation  
SSWDR-53 Rev. 2 October 2008  
 

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