10"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 11.75"W X 19.75"H] Material_Aluminum And Meets/Beats ASTM B280 Standard 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
10"W X 18"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 11.75"W X 19.75"H] Material_Aluminum And Meets Beats ASTM B280 Standard 4 X 12 Is CRFG2028 Width_14in And Meets Beats ASTM B280 Standard + Product Details Size – 4"w X 14"h is the size for the duct opening measurement only