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 Our elbow couplings are constructed CRFG2028 Width_14in 4 X 12 Is

Our elbow couplings are constructed to be smooth and seamless to create a leak-proof connection

display: inline-flex

+ 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 38 5/8" width X 34 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 6" duct openings

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 Our elbow couplings are constructed CRFG2028 Width_14in 4 X 12 Is Our elbow couplings are constructed to be smooth and seamless to create a leak proof connection display: inline flex