30"W X 14"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 15.75"H] Floor Grille + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 16"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 18"h is the size for the duct opening measurement only

+ Product Description This aluminum flex duct is intended to be used in heating

Crafted for durability and rust-resistance

75" width X 7

30"W X 14"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 31.75"W X 15.75"H] Floor Grille + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 16"w X 36"h is the size for the duct opening measurement only + Product Details Size 30"w X 18"h is the size for the duct opening measurement only