8"W X 8"H [Duct Opening] 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 9.75"H] Compatible With Duct 6in + Product Details Size –

+ Product Details Size – 26"w X 36"h is the size for the duct opening measurement only

+ Product Description Enhance your HVAC system with our Aluminum Return Filter Linear Bar Grille

excluding the old vent cover

Actual Filter Size – 29 3/4"w x 31 3/4" x 1"

8"W X 8"H [Duct Opening] 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 9.75"H] Compatible With Duct 6in + Product Details Size –+ Product Details Size 8"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are 9. 75" width X 9. 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. Carefully