![4 Inch Backdraft Damper[Upgraded], One-Way Airflow Duct Damper, Ducting Insert Backflow Preventer Duct Draft Blocker ventilation-kit Ceiling Exhaust Fan Adaptable ventilation](https://cdn.shopify.com/s/files/1/0087/6943/7773/files/6-Inch-Backdraft-Damper_14.webp?v=1753777531)
![4 Inch Backdraft Damper[Upgraded], One-Way Airflow Duct Damper, Ducting Insert Backflow Preventer Duct Draft Blocker ventilation-kit Ceiling Exhaust Fan Adaptable ventilation](https://cdn.shopify.com/s/files/1/0087/6943/7773/files/10-Inch-Backdraft-Damper1_1.webp?v=1753777535)
![4 Inch Backdraft Damper[Upgraded], One-Way Airflow Duct Damper, Ducting Insert Backflow Preventer Duct Draft Blocker ventilation-kit Ceiling Exhaust Fan Adaptable ventilation](https://cdn.shopify.com/s/files/1/0087/6943/7773/files/10-Inch-Backdraft-Damper2_1.webp?v=1753777596)
4 Inch Backdraft Damper[Upgraded], One-Way Airflow Duct Damper, Ducting Insert Backflow Preventer Duct Draft Blocker ventilation-kit Ceiling Exhaust Fan Adaptable ventilation
USD12.99
USD39.99
Pay in 4 interest-free payments of $3.25 Learn more
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 31 - Sep 5
