20"W X 14"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 15.75"H] w30h30 + Product Details Size - 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
20"W X 14"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 21.75"W X 15.75"H] w30h30 + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 32"w X 30"h is the size for the duct opening measurement only Aluminum Return Grille Spec Sheet