14"W X 14"H [Duct Opening] 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 15.75"W X 15.75"H] w10h10 Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 27 3/4" x 1"

+ Product Details Size – 20"w X 28"h is the size for the duct opening measurement only

Crafted for durability and rust-resistance

Elevate your living space with this sophisticated addition

Airflow – Easy unrestricted airflow for your HVAC system

14"W X 14"H [Duct Opening] 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 15.75"W X 15.75"H] w10h10 Actual Filter Size – 21+ Product Details Size 14"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are 15. 75" width X 15. 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.