8"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 9.875"W X 5.875"H] Compatible With Duct 12in text-align: center

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our damper helps create a well-balanced indoor environment

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 12" duct openings

75"H – fits a 18" X 10" duct opening

Actual Filter Size – 23 3/4"w x 21 3/4" x 1"

8"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 9.875"W X 5.875"H] Compatible With Duct 12in text-align: center+ Product Details Size 8"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 875" width X 5. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just