14" X 14" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 15.75"H] 10" Round Duct Pipe this 4-way air vent diffuser

this 4-way air vent diffuser allows you to precisely control airflow

actual front end outer dimensions are approximately 16 5/8" width X 27 5/8" height

The vent also has a bug screen to eliminate pest intrusion

75"H – fits a 14" X 12" duct opening

+ Product Details Size – 20"w X 12"h is the size for the duct opening measurement only

14" X 14" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 15.75"H] 10" Round Duct Pipe this 4-way air vent diffuser+ 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