12" X 10" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] flat stamped steel + Product Details Size –

+ Product Details Size – 28"w X 6"h is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 19 3/4" x 1"

allowing unrestricted airflow for optimal HVAC performance

actual front end outer dimensions are approximately 26 5/8" width X 8 5/8" height -

designed for superior airflow (up to 95%) and easy filter access

12" X 10" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] flat stamped steel + Product Details Size –+ 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