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| Type of Product | Backdraft Damper |
| Length | 30-1/2 inch |
| Blade Material | Aluminum |
| Ambient Temperature | 180 °F |
Type of Product |
Backdraft Damper |
Length |
30-1/2 inch |
Blade Material |
Aluminum |
Ambient Temperature |
180 °F |
Damper Type |
Static |
Blade Type |
Flat Blade |
Mounting position |
Vertical |
Flange Type |
Rear Flange |
Country of Origin |
USA |
Maximum Pressure |
1 in wc |
Action |
Normally Closed |
Seal Material |
Felt |
Panel |
1 |
Overall Length |
5-3/4 inch |
Mounting Location |
Wall |
Fan Diameter |
30 inch |
Area |
0.51 sq m |
Opening Width |
30.5 inch |
Orientation |
Parallel Blades |
Shape |
Square |
UNSPSC Code |
40101504 |
Material Thickness |
26 ga |
Flange Width |
1-1/2 inch |
Depth |
3 inch |
Overall Height |
33 Inch |
Part No |
3C309 |
Series |
EAS |
Rod Material |
Galvanized Steel Frame and Tie Rods |
Overall Width |
33 inch |
Frame Material |
Aluminum |
Item Code |
3C309 |
Maximum Air Velocity |
2500 fpm |
Air Flow |
Horizontal |
Opening Diameter |
30-1/2 inch |
Overall Diameter |
33 inch |
Mounting Hole Diameter |
1/4 inch |
Open Depth |
6-1/4 inch |
Opening Size |
30 inch |
Rough Opening Width |
30 inch |
Overall Height (cm) |
83.82 cm |
Overall Length (cm) |
14.61 cm |
Mounting Hole Diameter (Φmm) |
6.35 mm |
Overall Width (mm) |
838.2 mm |
Overall Diameter (mm) |
838.2 mm |
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