10"W X 16"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 11.75"W X 17.75"H] w8h8 + Product Description Maximize the

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

4" X 12" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

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+How To Measure A Grille Overall Size:

10"W X 16"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 11.75"W X 17.75"H] w8h8 + Product Description Maximize the+ Product Details Size 10"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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