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 4 X 12 Is CRFG2028 Width_14in

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

actual front end outer dimensions are 19" Width X 13" Height

+ Product Details Size – 30"w X 34"h is the size for the duct opening measurement only

75" width X 13

Actual Filter Size – 9 3/4"w x 9 3/4" x 1"

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 4 X 12 Is CRFG2028 Width_14in + Product Details High Quality Aluminum housing on the outside and on the inside for the best insulation value actual front end outer dimensions are 19" Width X 13" Height