14" X 12" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 13.75"H] w36h36 Actual Filter Size – 11

Actual Filter Size – 11 3/4"w x 5 3/4" x 1"

High Quality – Commercial grade aluminum - will never rust - designed for warehouses

actual front end outer dimensions are approximately 24 5/8" width X 20 5/8" height

actual front end outer dimensions are approximately 27 5/8" width X 12 5/8" height

+ Product Description Introducing HVAC Premium's Aluminum Adjustable Return Grill – the key to enhanced air control and energy efficiency

14" X 12" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 13.75"H] w36h36 Actual Filter Size – 11+ Product Details Size 14"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" width X 13. 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