10"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] 10" Round Duct Pipe + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 14"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 24 5/8" width X 14 5/8" height

actual front end outer dimensions are approximately 16 5/8" width X 14 5/8" height

easy installation

Designed with a ring base for flexible installation

10"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] 10" Round Duct Pipe + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 14"w X 18"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 24 5 8" width X 14 5 8" height