16"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 9.875"H] 10in diameter Do not measure the overall 4 X 12 Is CRFG2028 Width_14in

Do not measure the overall size of the register itself

Total outer size of this grille is

+ Product Details Size – 24"w X 30"h is the size for the duct opening measurement only

engineered for easy mud and flange installation and constructed with powder-coated stainless steel for enhanced durability

you’ll provide ample protection for your equipment against harmful environmental factors such as

16"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE EASY AIR FLOW LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 9.875"H] 10in diameter Do not measure the overall 4 X 12 Is CRFG2028 Width_14in Do not measure the overall size of the register itself Total outer size of this grille is