Greenheck Fan dimensions SSWDR-53 Stainless Steel Round Backdraft Damper, Ratings, Application

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: 3 in. wg (.7 kPa)

Velocity: 2000 fpm (10.2 m/s)

Temperature: 180°F (82°C)

STANDARD CONSTRUCTION

Frame: 20 ga. (1mm) 304 stainless steel

Blades: 24 ga. (.7mm) 304 stainless steel

Blade Seal: closed cell neoprene/EPDM/SBR blend

SIZE LIMITATIONS (available in 1 in. [25mm] increments)

Minimum Size:	4 in. (102mm)
Maximum Size:	24 in. (610mm)

OPTIONAL FEATURES

Extended Frame

Frame Dimensions

Damper Model	Length
SSWDR-53 Standard Frame	3.25 in.
	(83mm)
SSWDR-53 Extended Frame
Damper Diameter	Length
	“L”
5 in. - 10.999 in.	7.25 in.
(127mm - 279mm)	(184mm)
11 in. - 16.999 in.	10.25 in.
(279mm - 432mm)	(260mm)
17 in. - 24 in.	13.25 in.
(432mm - 610mm)	(336mm)

Diameter is approximately 1/8 in. (3mm) undersize.

Extended Frame

L

	3.25 in.
Airflow	(83mm)
Seal	Springs
Frame

Copyright © 2008 Greenheck Fan Corporation SSWDR-53 Rev. 2 October 2008