6"W X 24"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 7.75"W X 25.75"H] Black this diffuser ensures long-lasting durability

this diffuser ensures long-lasting durability and adds a touch of elegance to any space

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 12" duct openings

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 6" duct openings

75"H – fits a 20" X 4" duct opening

Designed to seamlessly integrate with T-Bar vent covers in drop ceiling setups

6"W X 24"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 7.75"W X 25.75"H] Black this diffuser ensures long-lasting durability+ Product Details Size 6"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 25. 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.