18" X 6" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 19.75"W X 7.75"H] w30h30 Actual Filter Size – 7

Actual Filter Size – 7 3/4"w x 23 3/4" x 1"

including Ductless Mini-Split

Universal size

allowing you to update the aesthetic in your home without losing valuable seasonal control of your HVAC system

See chart below:

18" X 6" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 19.75"W X 7.75"H] w30h30 Actual Filter Size – 7+ Product Details Size 18"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 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