12" X 10" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] w14h14 this flex duct decreases the

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

+ Product Details Outer dimensions: 11

actual front end outer dimensions are approximately 30 5/8" width X 22 5/8" height

+ Product Details Size - 6"w X 30"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 28"h is the size for the duct opening measurement only

12" X 10" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] w14h14 this flex duct decreases the+ 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