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![Heavy Backdraft Damper](https://www.megaflow-hvac.com/archive/image/product1/images/1594861706_thumb_630.png?v=1)
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Heavy Backdraft Damper
Description:
- Depth:220mm
- Frame:16 GA Galvanized Steel
- Bearings:Non-oil bushings
- Counter Weight:Adjustable
- Blade material:Aluminum extrusion aluminum alloy blade
- Blades operation type:Parallel
- Maximum size:Unlimited (disassembly depending on size)
- Minimum size:250mm×250mm