Description
20"W X 25"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 21.75"W X 26.75"H] w18h18 + Product Details Size Product Details Size 32 CADJB3 C 128 Custom Louvers + Product Details Size 40"w X 6"h is the size for the duct opening measurement only + Product Details Size 10"w X 30"h is the size for the duct opening measurement only