12"w X 6"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 7.75"H] white Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 33 3/4" x 1"

+ Product Details Size – 14" x 18" or 18" x 14" is the size for the duct opening measurement only

Quality Packaging – Every part is hand inspected for quality before it is packaged

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+ Product Details Size – 16" x 18" or 18" x 16" is the size for the duct opening measurement only

12"w X 6"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 7.75"H] white Actual Filter Size – 23+ Product Details Size 12"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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