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| Type of Product | Backdraft Damper |
| Blade Type | Flat Blade |
| Country of Origin | USA |
| UNSPSC Code | 40101504 |
Type of Product |
Backdraft Damper |
Blade Type |
Flat Blade |
Country of Origin |
USA |
UNSPSC Code |
40101504 |
Part No |
3C311 |
Item Code |
3C311 |
Maximum Air Velocity |
2500 fpm |
Flange Width |
1-1/2 inch |
Free Area |
10.3 sq ft |
Rough Opening Width |
42.5 inch |
Blade Material |
Aluminum |
Air Direction |
Horizontal |
Rough Opening Length |
42-1/2 inch |
Rough Opening Shape |
Square |
Damper Type |
Static |
Maximum Ambient Temperature |
180 °F |
Switch Action |
Normally Closed |
Number of Panel |
2 |
Frame Depth |
3 inch |
Mounting position |
Vertical |
Flange Type |
Rear Flange |
Rough Opening Diameter |
42-1/2 inch |
Maximum Pressure |
25.4 mm wc |
Seal Material |
Felt |
Mounting Location |
Wall |
Overall Length |
5-3/4 inch |
Fan Diameter |
42 inch |
Orientation |
Parallel Blades |
Overall Height |
1.14 m |
Overall Width |
45 inch |
Frame Material |
Aluminum |
Blade Thickness |
26 ga |
Frame Opening Height |
42 inch |
Overall Diameter |
45 inch |
Frame Opening Width |
42 inch |
Mounting Hole Diameter |
1/4 inch |
Open Depth |
6-1/4 inch |
Series |
EAS |
Tie Rod Material |
Galvanized Steel Frame and Tie Rods |
Overall Length (cm) |
14.61 cm |
Mounting Hole Diameter (Φmm) |
6.35 mm |
Overall Height (inch) |
45 Inch |
Overall Width (cm) |
114.3 cm |
Overall Diameter (mm) |
1143 mm |
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