10"w X 6"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] 6" Round Duct Pipe + Product Details Size –

+ Product Details Size – 20"w X 30"h is the size for the duct opening measurement only

Actual Filter Size – 24 3/4"w x 5 3/4" x 1"

75" Width X 37

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actual front end outer dimensions are approximately 14 5/8" width X 14 5/8" height

10"w X 6"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] 6" Round Duct Pipe + Product Details Size –+ Product Details Size 10"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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