Light Duty Backdraft Dampers |
Maximum System (see Product Sheet for details) | Airflow Direction |  |
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| Model | Frame Depth | Blade Type | Counterbalance | Pressure (in.wg.) | Velocity (fpm) | Horizontal | Upflow | Downflow | Flange Frame Option | 304 Stainless Steel Option | ||||
| BD-20 | 2" | Butterfly | - | 1 | 1,000 |
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| BD-20R | 4" to 16" | Butterfly | - | 1 | 1,000 |
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- | - | - |
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| BD-50 | 2" | Formed | - | 3.5 | 1,250 |
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- |
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| BD-51 | 2" | Fabric | - | 4 | 1,000 |
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- |
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| BD-52 | 2" | Formed | Assist to Close | 3.5 | 1,250 | - | - |
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| BD-53 | 2" | Formed | Adjustable Assist to Open | 3.5 | 1,250 |
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- | - |
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- |
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| BD-54 | 2" | Formed | Adjustable Assist to Close | 3.5 | 1,250 |
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- |
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| BD-58 | 2" | Formed | Motorized | 3.5 | 1,250 |
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- |
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