22"W X 12"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 23.75"W X 13.75"H] 18" Diameter + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 34"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 6"h is the size for the duct opening measurement only

3 * Insulation density is 30kgs/CBM = 0

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

+ Product Details Size - 28"w X 14"h is the size for the duct opening measurement only

22"W X 12"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 23.75"W X 13.75"H] 18" Diameter + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 34"w X 36"h is the size for the duct opening measurement only + Product Details Size 26"w X 6"h is the size for the duct opening measurement only