20"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 5.75"H] steel preventDefault()

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provides a modern look and quiet operation due to its half-inch by half-inch cube design

angle them down for effective warmth distribution

75" width X 9

much more than the required 700 psi for r410

20"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 5.75"H] steel preventDefault()+ Product Details Size 20"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 5. 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.