36"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 21.75"H] Adjustable Return Carefully Shrink Wrapped – With Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Carefully Shrink Wrapped – With cardboard backing to prevent damage in shipment

R value rating of insulation - R3

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+ Product Details Size - 8"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 6"w X 18"h is the size for the duct opening measurement only

36"W X 20"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 37.75"W X 21.75"H] Adjustable Return Carefully Shrink Wrapped – With Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Carefully Shrink Wrapped – With cardboard backing to prevent damage in shipment R value rating of insulation R3