25"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 26.75"W X 9.75"H] flat stamped steel Think of the diameter as

Think of the diameter as a straight line from one end to the other

+ Product Details Size - 32"w X 26"h is the size for the duct opening measurement only

Design – Fixed hinged for easy filter change & cleaning - uses a 1" thick filter

Its sleek contours bring a touch of modern sophistication to any room

25"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 26.75"W X 9.75"H] flat stamped steel Think of the diameter as+ Product Details Size 25"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 26. 75" width X 9. 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.