36"W X 16"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 17.75"H] 18" Diameter only measure the "hole" in 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
36"W X 16"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 37.75"W X 17.75"H] 18" Diameter only measure the "hole" in 4 X 12 Is CRFG2028 Width_14in only measure the "hole" in the wall duct 75" width X 19