10"W X 8"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 11.75"W X 9.75"H] Color_R-4.2 Yellow + Product Details High Quality Height_16in RG1612AL Product Details Size 14

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

crafted from heavy gauge steel for unparalleled durability

Whether you choose the modern contemporary

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

+ Product Details Size - 36"w X 18"h X 2"d (for duct opening measurement only)

10"W X 8"H [Duct Opening] 3 Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 11.75"W X 9.75"H] Color_R 4.2 Yellow + Product Details High Quality Height_16in RG1612AL Product Details Size 14 + Product Details High Quality Aluminum housing on the outside and on the inside for the best insulation value crafted from heavy gauge steel for unparalleled durability