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Product Specifications:
| Item | Backdraft Exhaust Damper |
| Action | Single Acting |
| Airflow Direction | Horizontal, Vertical |
| Application | Backdraft |
| Blade Material | Aluminum |
| Blade Material Thickness | 26 ga. |
| Blade Orientation | Parallel Blades |
| Blade Seal Material | Felt |
| Blade Type | Flat Blade |
| Bushing Material | Nylon |
| Closure Type | Gravity |
| Closure Velocity Rating | 2000 FPM |
| Counterbalanced | No |
| Damper Finish | Mill Finish |
| Damper Size (in.) | 17-3/4 x 17-3/4 |
| Damper Type | Dynamic |
| Fits Fan Dia. | 18" |
| For Duct Shape | Square |
| For Nominal Duct Diameter | 18" |
| Frame Depth | 2" |
| Frame Material | Galvanized Steel |
| Frame Material Thickness | 20 ga. |
| Free Area | 2.2 sq. ft. |
| Includes | Pre-Punched Conduit Hole Knock-Out |
| Max. Air Velocity | 2000 FPM |
| Max. Velocity | 2000 FPM |
| Maximum Ambient Temperature | 180°F |
| Maximum Pressure | 1 in. wc |
| Minimum Ambient Temperature | -40°F |
| Mounting Location | Ceiling, Wall |
| Mounting Position | Horizontal, Vertical |
| Number Of Panels | 1 |
| Opening Type | Motorized |
| Overall Height | 17 3/4" |
| Overall Length | 4 1/2" |
| Overall Size | 17-3/4 x 17-3/4 In. |
| Overall Width | 17 3/4" |
| Rough Opening Dia. | 18" |
| Rough Opening Length | 18" |
| Rough Opening Shape | Square |
| Rough Opening Width | 18" |
| Series | 411 Series |
| Single Acting/double Acting | Single Acting |
| Switch Action | NC |
| Type | Horizontal, No Flange, Vertical Mount |
Shipping Info:
| Ship weight (kg) | 1.8 |
| Ship height (cm) | 45.09 |
| Ship length (cm) | 11.43 |
| Ship width (cm) | 45.09 |
| HS code | 8414901080 |
| Country of Origin | US |
Product Variants
| Model | For Nominal Duct Diameter | Number Of Panels | Free Area | Rough Opening Length | Rough Opening Width | Overall Width | Overall Height | Rough Opening Dia. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| 2FTV7 | 24" | 1 | 3.6 sq. ft. | 24" | 24" | 23 3/4" | 23 3/4" | 24" | €114.05 | |
| 2FTW8 | 10" | 1 | 0.4 sq. ft. | 10" | 10" | 9 3/4" | 9 3/4" | 10" | €61.62 | |
| 2FTX4 | 12" | 1 | 0.9 sq. ft. | 12" | 12" | 11 3/4" | 11 3/4" | 12" | €63.02 | |
| 2FTX5 | 14" | 1 | 1 sq. ft. | 14" | 14" | 13 3/4" | 13 3/4" | 14" | €75.28 | |
| 5NKN7 | 56" | 2 | 21.5 sq. ft. | 56" | 56" | 55 3/4" | 55 3/4" | 56" | €561.08 | |
| 5NKN8 | 60" | 2 | 21.9 sq. ft. | 60" | 60" | 59 1/2" | 59 1/2" | 60" | €518.58 | |
| 5NKN9 | 64" | 2 | 29.5 sq. ft. | 64" | 64" | 63 3/4" | 63 3/4" | 64" | €553.51 |
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Contact us
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DAYTON 2FTU9 Damper Vertical/horizontal Mounting 17 3/4 Sq
€90.82 /unit
