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Best Seller | 4" Metal Backdraft Damper Backflow Preventer Draft Blocker Connector - Red The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. ... more | FREE shipping go to store |
| 4" Metal Backdraft Damper Backflow Preventer Draft Blocker Connector - Red The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. ... more | FREE shipping go to store |
| 6" Backdraft Damper Backflow Preventer Draft Blocker Duct Adaptor Red The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. ... more | FREE shipping go to store |
| 6" Backdraft Damper Ducting Insert Backflow Preventer Draft Blocker Silver The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. ... more | FREE shipping go to store |
| 4" Backdraft Damper Ducting Insert Backflow Preventer Draft Blocker w Clamp - Silver The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. ... more | FREE shipping go to store |
| 4" Backdraft Damper Ducting Insert Backflow Preventer Draft Blocker Silver The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. ... more | FREE shipping go to store |
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