4"W X 16"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 5.75"W X 17.75"H] Color_Black Efficient Airflow Design: The slots

Efficient Airflow Design: The slots are meticulously angled to diversify airflow in two directions

Width vs Height

+ Product Details Size – 10"w X 4"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 14"h is the size for the duct opening measurement only

75" width X 23

4"W X 16"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 5.75"W X 17.75"H] Color_Black Efficient Airflow Design: The slots+ Product Details Size 4"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 17. 75" height. Design Easy unrestricted airflow for your HVAC system 50 angled to provide maximum airflow. High Quality Solid stamped steel with counter sunk screw holes (screws included) and no sharp edges. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just waxed.