16" X 16" [Duct Opening] 4-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] Grille As The Hot Air Will

As The Hot Air Will Flow Up & Out

+ Product Details Size - 18"w X 6"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 26 5/8" height

+ Product Details Size - 10"w X 10"h X 2"d (for duct opening measurement only)

16" X 16" [Duct Opening] 4-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] Grille As The Hot Air Will+ 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