14" X 8" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 9.75"H] Compatible With Duct 12in making it ideal for preventing

making it ideal for preventing tampering or unauthorized adjustments

Design – Fixed Hinged for easy filter change & cleaning - uses a 1" thick filter

Every grille has a front end frame

Actual Filter Size – 33 3/4"w x 33 3/4" x 1"

+ Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only

14" X 8" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 9.75"H] Compatible With Duct 12in making it ideal for preventing+ Product Details Size 14"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" width X 9. 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