24" X 12" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 25.75"W X 13.75"H] 12in diameter + Product Details Size -

+ Product Details Size - 18"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 26"h is the size for the duct opening measurement only

+ Product Details Outer dimensions: 21

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+ Product Description When it's time to upgrade your HVAC Vents in your house

24" X 12" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 25.75"W X 13.75"H] 12in diameter + Product Details Size -+ Product Details Size 24"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" width X 13. 75" height. High Quality High quality steel with counter sunk screw holes (screws included) and no sharp edges. Equipped with a lever for easy airflow adjustment and dampening. Airflow Control Adjustable airflow lever allows precise control over the direction and volume of air. Installation