34"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 35.75"W X 5.75"H] Color_White If your duct opening is

If your duct opening is 14 inches in diameter

+ Product Details Size - 25"w X 34"h is the size for the duct opening measurement only

while the ingenious dial-controlled damper empowers you to effortlessly regulate airflow using your foot

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+ Product Details Size - 25"w X 14"h is the size for the duct opening measurement only

34"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 35.75"W X 5.75"H] Color_White If your duct opening is+ Product Details Size 34"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 35. 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.