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] Supply Grille Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 5 3/4" x 1"

actual front end outer dimensions are approximately 24 5/8" width X 38 5/8" height

Insulation density is 30kgs/cbm = 0

allow you to customize airflow direction with ease

See chart below:

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] Supply Grille Actual Filter Size – 33+ 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