10"w X 10"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 11.75"H] 18in diameter High diffusion induction rates result Compatible with Duct 4" Product Details Size 32 LO246

High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

+ Product Details Size – 14"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 22"w X 18"h is the size for the duct opening measurement only

Optional Butterfly Damper Available At Asin: B007CNEL1W

+ Product Details Size - 32"w X 14"h is the size for the duct opening measurement only

10"w X 10"h [Duct Opening] 3 Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 11.75"H] 18in diameter High diffusion induction rates result Compatible with Duct 4" Product Details Size 32 LO246 High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy + Product Details Size – 14"w X 30"h is the size for the duct opening measurement only