24"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 25.75"W X 19.75"H] w6h6 only measure the "hole" in 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
24"W X 18"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 25.75"W X 19.75"H] w6h6 only measure the "hole" in 4 X 12 Is CRFG2028 Width_14in only measure the "hole" in the wall duct + Product Details Size – 14"w X 8"h is the size for the duct opening measurement only