14" X 6" [Duct Opening] 2-Way Vertical Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 7.75"H] Compatible With Duct 12in + Product Details Size –

+ Product Details Size – 25"w X 28"h is the size for the duct opening measurement only

Both lines taped together every 18in for easier handling & installation

16"w X 3"h Is The Size For The Duct Opening Measurement Only

you can attain the diameter of the vent

14" X 6" [Duct Opening] 2-Way Vertical Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 7.75"H] Compatible With Duct 12in + Product Details Size –+ Product Details Size 14"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" width X 7. 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