8"W X 4"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 5.75"H] Material_Aluminum + Product Description This aluminum

+ Product Description This aluminum flex duct is intended to be used in heating

ensuring accurate thermostat operation

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

Actual Filter Size – 21 3/4"w x 35 3/4" x 1"

actual front end outer dimensions are approximately 20 5/8" width X 28 5/8" height

8"W X 4"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 9.75"W X 5.75"H] Material_Aluminum + Product Description This aluminum+ Product Details Size 8"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are 9. 75" width X 5. 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