24"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 25.75"W X 31.75"H] Adjustable Return + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 6"w X 12"h is the size for the duct opening measurement only

3/8" - 4223 PSI

9% Pure Copper meeting ASTM B280 standards

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+ Product Details Size – 16"w X 20"h is the size for the duct opening measurement only

24"W X 30"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 25.75"W X 31.75"H] Adjustable Return + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 6"w X 12"h is the size for the duct opening measurement only 3 8" 4223 PSI