20"W X 24"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 25.75"H] w10h10 + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 24"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 30"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 41

1/4” - 6518 PSI

Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment

20"W X 24"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 21.75"W X 25.75"H] w10h10 + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 24"w X 28"h is the size for the duct opening measurement only + Product Details Size 36"w X 30"h is the size for the duct opening measurement only