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] Compatible with Duct 6" Crafted from robust 20-gauge steel

Crafted from robust 20-gauge steel

Design – removable frame for easy filter change & cleaning - uses a 1" thick filter

+ Product Details Size - 8"w X 36"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 21 5/8" width X 31 5/8" height

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] Compatible with Duct 6" Crafted from robust 20-gauge steel+ 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