12"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] (Copy) Sheet Metal Fittings + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 28" x 30 or 30" x 28" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 34 5/8" height

making it strong against rust and corrosion

actual front end outer dimensions are approximately 38 5/8" width X 34 5/8" height

ensuring exceptional durability and performance for HVAC duct installations

12"w X 6"h [Duct Opening] 1 Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] (Copy) Sheet Metal Fittings + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 28" x 30 or 30" x 28" is the size for the duct opening measurement only actual front end outer dimensions are approximately 27 5 8" width X 34 5 8" height