12"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 5.75"H] Height_32in + Product Details Size &

+ Product Details Size & Compatibilty - The 10" to 8" round metal pipe reducer & increaser 30 gauge is compatible with duct 10" to 8"

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actual front end outer dimensions are 13" width X 25" height

actual front end outer dimensions are approximately 16 5/8" width X 14 5/8" height

25" Width X 5

12"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 5.75"H] Height_32in + Product Details Size &+ Product Details Size 12"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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.