12" x 3" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 14w X 5"h] 1-Way actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 20" OR 20" x 18" duct opening (measured at the opening)

+ Product Details Size - 22"w X 34"h is the size for the duct opening measurement only

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12" x 3" Decorative Wood Supply Air Vent HVAC Duct Cover Grille Polished Finish Red Oak Wood 2 Way Air Direction [Outer Dimensions: 14w X 5"h] 1 Way actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 14 5 8" width X 16 5 8" height + Product Details Perfect Fit & Easy Sizing Designed for a 18" x 20" OR 20" x 18" duct opening (measured at the opening)