12"w X 12"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 13.75"H] w24h24 + Product Details Size –

+ Product Details Size – 28"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 12 5/8" height

+ Product Description When it's time to upgrade your HVAC Vents in your house

& EN 13180 standards

Carefully shrink wrapped with cardboard backing to prevent damage in shipment

12"w X 12"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 13.75"H] w24h24 + Product Details Size –+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 13. 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