12"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 7.75"H] with filter + Product Details Size –

+ Product Details Size – 8" x 16" or 16" x 8" is the size for the duct opening measurement only

Pack of 4 Pieces

+ Product Details Size - 6"w X 6"h X 2"d (for duct opening measurement only)

Design – This airflow control component are made to connect to HVAC diffuser and restrict airflow

24"w X 6"h Is The Size For The Duct Opening Measurement Only

12"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 7.75"H] with filter + Product Details Size –+ Product Details Size 12"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 7. 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