Photo 1 of [2 Pack] Fits 8 Inch Neck Air Duct | Steel Round Air Supply Diffuser for Ceiling by Handua | 8" Neck Steel Butterfly Damper Included | Round Diffuser Vent Cover | White | Outer Dimension: 11-15/16"

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Photo 1 of [2 Pack] Fits 8 Inch Neck Air Duct | Steel Round Air Supply Diffuser for Ceiling by Handua | 8" Neck Steel Butterfly Damper Included | Round Diffuser Vent Cover | White | Outer Dimension: 11-15/16"Photo 2 of [2 Pack] Fits 8 Inch Neck Air Duct | Steel Round Air Supply Diffuser for Ceiling by Handua | 8" Neck Steel Butterfly Damper Included | Round Diffuser Vent Cover | White | Outer Dimension: 11-15/16"