12"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] (Copy) w14h14 + Product Details Size –

+ Product Details Size – 4"w X 20"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 24"h is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 11 3/4" x 1"

highly flexible

+ Product Details Size - 36"w X 34"h X 2"d (for duct opening measurement only)

12"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] (Copy) w14h14 + 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