8" X 6" [Duct Opening] 1-Way Air Vent Adjustable Aluminum Curved Blades Integral Multi-Shutter Damper HVAC Diffuser [Outer Dimensions: 9.75"W X 7.75"H] ceiling Premium Airflow Efficiency - High-performance

Premium Airflow Efficiency - High-performance cube core eggcrate design allows 95% airflow efficiency

Performance – High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

Actual Filter Size – 27 3/4"w x 19 3/4" x 1"

75"H – fits a 16" X 10" duct opening

+ Product Details Size - 36"w X 20"h is the size for the duct opening measurement only

8" X 6" [Duct Opening] 1-Way Air Vent Adjustable Aluminum Curved Blades Integral Multi-Shutter Damper HVAC Diffuser [Outer Dimensions: 9.75"W X 7.75"H] ceiling Premium Airflow Efficiency - High-performance+ Product Details Size 8"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are 9. 75" width X 7. 75" height. Design Individually adjusting curved blades. Multi shutter damper with handle operator to adjust air flow. 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