8"W X 14"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 9.75"W X 15.75"H] Curved Blade Steel + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 44"W X 4"H is (for duct opening measurement only)

Every grille has a front end frame that will overlap at the wall joint

Built with durable 30-gauge metal

Cut for precise installation and maximum use - the line finished is 164 ft

+ Product Details Size - 24"w X 34"h is the size for the duct opening measurement only

8"W X 14"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 9.75"W X 15.75"H] Curved Blade Steel + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 44"W X 4"H is (for duct opening measurement only) Every grille has a front end frame that will overlap at the wall joint