32"W X 36"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 33.75"W X 3775"H] Fixed Blades Adjustable airflow control - by Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Adjustable airflow control - by rotating the middle disk

+ Product Details Size - 25"w X 24"h is the size for the duct opening measurement only

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

polished look

the actual front end outer dimensions are 7" in diameter

32"W X 36"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 33.75"W X 3775"H] Fixed Blades Adjustable airflow control by Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Adjustable airflow control by rotating the middle disk + Product Details Size 25"w X 24"h is the size for the duct opening measurement only