28"W X 28"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 29.75"W X 29.75"H] Color_Red Oak Wood + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 34"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only

+ Product Details Size - 34"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 4"h is the size for the duct opening measurement only

R value rating of insulation - r3

28"W X 28"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 29.75"W X 29.75"H] Color_Red Oak Wood + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 34"w X 20"h is the size for the duct opening measurement only + Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only