6"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 7.75"W X 19.75"H] Ceiling } /* Added styles for

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this HVAC vent duct cover ensures durability and reliability

High Quality – High-quality

Produced in accordance with ISO 9001-2008 Quality Management System

All of these grills have dampers

6"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 7.75"W X 19.75"H] Ceiling } /* Added styles for+ Product Details Size 6"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 19. 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.