| After-sales Service: | on Line Service |
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| Warranty: | One Year |
| ventilation mode: | natural ventilation |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier
OBD-B
Opposite Blade Damper
1,Opposed blade air damper is use for square diffuser and air grilles .It constructed by an opposed blade damper and an electromotor.
2,The blades are linked to each other, as long as connecting to power supply, all the blades will move; the air ventilation and cervix area will get larger or smaller.
3, The damper adopts gear theory. Compared with traditional products, it is superior at low noise and stable blades adjustment and so on.
Suppliers with verified business licenses
Audited Supplier 
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