Photo 1 of Hon&Guan 8 Inch Backdraft Damper,Upgrade Thickness and Rubber Ring One-Way Airflow Long Duct Damper Backflow Preventer Draft Blocker for 8 Inch Duct Fan in Range Hoods and Grow Tent

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Photo 1 of Hon&Guan 8 Inch Backdraft Damper,Upgrade Thickness and Rubber Ring One-Way Airflow Long Duct Damper Backflow Preventer Draft Blocker for 8 Inch Duct Fan in Range Hoods and Grow TentPhoto 2 of Hon&Guan 8 Inch Backdraft Damper,Upgrade Thickness and Rubber Ring One-Way Airflow Long Duct Damper Backflow Preventer Draft Blocker for 8 Inch Duct Fan in Range Hoods and Grow Tent