18"W X 18"H [Duct Opening] 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 19.75"W X 19.75"H] w16h16 Each grille is carefully packaged

Each grille is carefully packaged with cardboard backing to prevent damage during shipment

actual front end outer dimensions are 11

+ Product Details Size – 24"w X 32"h is the size for the duct opening measurement only

Actual Filter Size – 27 3/4"w x 7 3/4" x 1"

18"W X 18"H [Duct Opening] 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 19.75"W X 19.75"H] w16h16 Each grille is carefully packaged+ Product Details Size 18"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are 19. 75" width X 19. 75" height. Design Individually adjusting curved blades for better air flow control. Screws Included High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant, beautiful, and smooth surface, adds a luxurious touch to any home.