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| Type of Product | Backdraft Damper |
| Length | 31 inch |
| Blade Material | Aluminum |
| Mounting position | Horizontal Vertical |
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Type of Product |
Backdraft Damper |
Length |
31 inch |
Blade Material |
Aluminum |
Mounting position |
Horizontal Vertical |
Flange Type |
Front Flange |
Country of Origin |
USA |
Maximum Pressure |
1 in wc |
Action |
Normally Closed |
Seal Material |
Felt |
Panel |
1 |
Mounting Location |
Ceiling Wall |
Fan Diameter |
30 inch |
Area |
0.45 sq m |
Opening Width |
31 inch |
Shape |
Square |
UNSPSC Code |
30151801 |
Material Thickness |
26 ga |
Flange Width |
1-3/8 inch |
Depth |
1-5/8 inch |
Overall Height |
32-3/4 Inch |
Part No |
3HHT1 |
Rod Material |
Galvanized Steel Frame and Tie Rods |
Overall Width |
32-3/4 inch |
Frame Material |
Aluminum |
Item Code |
3HHT1 |
Maximum Air Velocity |
2250 fpm |
Air Flow |
Horizontal |
Mounting Hole Diameter |
1/4 inch |
Open Depth |
6 inch |
Mounting Style |
Flush Mount |
Overall Height (mm) |
831.75 mm |
Length (mm) |
787.4 mm |
Length (cm) |
78.74 cm |
Depth (mm) |
41.402 mm |
Mounting Hole Diameter (Φmm) |
6.35 mm |
Overall Width (mm) |
831.85 mm |
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