14" X 10" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 11.75"H] Outdoor Vent Covers actual front end outer dimensions RG2230 HP w4h4 const modal document

actual front end outer dimensions are 3"

+ Product Details Size - 20"w X 8"h is the size for the duct opening measurement only

Round-neck-to-square-face construction results in 360 degree air diffusion pattern similar to a full round diffuser

actual front end outer dimensions are approximately 18 5/8" width X 36 5/8" height

+ Product Details Size – 20"w X 50"h is the size for the duct opening measurement only

14" X 10" [Duct Opening] 3 Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 11.75"H] Outdoor Vent Covers actual front end outer dimensions RG2230 HP w4h4 const modal document actual front end outer dimensions are 3" + Product Details Size 20"w X 8"h is the size for the duct opening measurement only