8"W X 6"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 7.75"H] w36h36 Carefully packaged for protection during

Carefully packaged for protection during shipment

Actual Filter Size – 11 3/4"w x 21 3/4" x 1"

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ISO Supply Diffusers perform efficiently with air loadings of 6 to 30 air changes per hour (based on 10 ft

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

8"W X 6"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 7.75"H] w36h36 Carefully packaged for protection during+ 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