Greenheck Extruded Backdraft Damper ES-30 Specification Sheet

DAMPERS AND LOUVERS

Application and Design

The ES-30 series is a vertical mounted backdraft damper that is
designed to allow horizontal airflow and prevent reverse airflow.
The damper is opened by air pressure differential and closed by
gravity.

Ratings

(See page 2 for specific limitations)
Pressure: 2.5 in. wg (622 Pa) - differential pressure.
Velocity: 2000 fpm (10.2 m/s)
Temperature: 180°F (82ºC)
3" 2" Max. 3"

Standard Construction

Frame: 6063T5 extruded aluminum.
(0.063 in. [1.6mm] thickness)
Blades: 6063T5 extruded aluminum.
(0.050 in. [1.3mm] thickness)
Axle Bearings: Synthetic polycarbonate sleeve type.
Linkage: / in. (3mm) aluminum.
1
8
Blade Seals: Vinyl.

Size Limitations

Minimum Size (without weights): 4 in.W x 4 in. H
Minimum Size (with weights): 6 in. W x 8 in. H
Maximum Size: 40 in. W x 52 in. H

Options and Accessories

• 1 / in. (38mm) Flange On Discharge: ES-31
1
2
• 1 / in. (38mm) Flange On Intake:
1
2
• Counterbalance Weights
2"
• Pull Chain Actuator
• Wing Nut Actuator
Note: Counterbalance weights may require field adjustment. Instructions are available at www.greenheck.com.
2" Max. 3"
(102mm x 102mm)
(152mm x 203mm)
(1016mm x 1321mm)
ES-32
2" 2"
BACKDRAFT DAMPER
Extruded
Vertical Mount - Horizontal Airflow
3" 2" Max.
2" Max.
*W & H dimensions furnished approximately
NOTE: Optional counterbalance weights shown.
3" 2" Max.
2"
ES-30
No Flange
ES-30
No Flange Flange on Discharge
2"
ES-30 SERIES
3" 2" Max. 3"
W*
/ in. (6mm) under size.
1
4
3" 2" Max. 3"
1 1 / "
2"
2
ES-31
Flange On Discharge
ES-31
Flange on Intake
2"
H*
2" Max.
3"
2" Max.
1 1 / "
2"
2
ES-32
Flange On Intake
ES-32
2"
2"
ES-30
No Flange