10" X 10" [Duct Opening] 2-Way Vertical Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 11.75"H] Outdoor Vent Covers actual front end outer dimensions

actual front end outer dimensions are approximately 27 5/8" width X 8 5/8" height

actual front end outer dimensions are 25" Width X 13" Height

actual front end outer dimensions are approximately 22 5/8" width X 36 5/8" height

easy unrestricted airflow

+ Product Details Size - 12"w X 18"h is the size for the duct opening measurement only

10" X 10" [Duct Opening] 2-Way Vertical Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 11.75"H] Outdoor Vent Covers actual front end outer dimensions+ Product Details Size 10"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 11. 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