12" X 10" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] 1-Way + Product Description Improve your

+ Product Description Improve your HVAC system with our high-quality

actual front end outer dimensions are approximately 30 5/8" width X 30 5/8" height

this flex duct decreases the pressure loss and provides a more hygienic environment

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complete with a set of sponge gasket and mounting frame

12" X 10" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] 1-Way + Product Description Improve your+ Product Details Size 12"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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