30"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 9.75"H] Supply Grille + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 26"w X 8"h is the size for the duct opening measurement only

+ Product Details Size – 10" X 4" is the size for the duct opening (floor/vent hole) measurement only

this HVAC vent duct cover ensures durability and reliability

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5" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

30"W X 8"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 31.75"W X 9.75"H] Supply Grille + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 26"w X 8"h is the size for the duct opening measurement only + Product Details Size – 10" X 4" is the size for the duct opening (floor vent hole) measurement only