16"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 17.875"H] Aluminum - Cube Core + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 36" or 36" x 10" duct opening (measured at the opening)

+ Product Details Size – 32"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 6"h Is The Size For The Duct Opening Measurement Only

Whether replacing an old register or installing a new vent

+ Product Details Size - 24"w X 22"h X 2"d (for duct opening measurement only)

16"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE EASY AIR FLOW LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 17.875"H] Aluminum Cube Core + Product Details Perfect Fit Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Perfect Fit & Easy Sizing Designed for a 10" x 36" or 36" x 10" duct opening (measured at the opening) + Product Details Size – 32"w X 16"h is the size for the duct opening measurement only