14" X 14" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 15.75"H] Compatible with Duct 8" + Product Details Size –

+ Product Details Size – 24"w X 24"h is the drop ceiling HVAC supply grille size - for T-Bar lay-in

+ Product Details Size – 10" round duct opening-

+ Product Details Size – 30"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 30"h X 2"d (for duct opening measurement only)

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

14" X 14" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 15.75"H] Compatible with Duct 8" + Product Details Size –+ Product Details Size 14"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" width X 15. 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