16" X 16" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] White + Product Details Size –

+ Product Details Size – 25"w X 32"h is the size for the duct opening measurement only

+ Product Details Size - 22"w X 8"h is the size for the duct opening measurement only

The premium durable material guarantees that they will never rust or wear through

High Quality – High-quality rust-free

Designed for a 1" thick filter

16" X 16" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] White + Product Details Size –+ Product Details Size 16"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 17. 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