20"W X 6"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 7.75"H] w18h18 Choose from a palette of

Choose from a palette of four elegant colors – white

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

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and waste gases transmission lines

20"W X 6"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 7.75"H] w18h18 Choose from a palette of+ Product Details Size 20"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 7. 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.