10" x 4" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 12w X 6"h] Return Grille actual front end outer dimensions Oval to Round 90-Degree Boot RFGF1212 Rigid Design Noise Free

actual front end outer dimensions are approximately 16 5/8" width X 22 5/8" height

+ Product Details Size - 6"w X 28"h is the size for the duct opening measurement only

+ Product Details Size – 16" x 30" or 30" x 16" is the size for the duct opening measurement only

please note that the total outer dimensions of the grille measure 12" in diameter

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

10" x 4" Decorative Wood Supply Air Vent HVAC Duct Cover Grille Polished Finish Red Oak Wood 2 Way Air Direction [Outer Dimensions: 12w X 6"h] Return Grille actual front end outer dimensions Oval to Round 90 Degree Boot RFGF1212 Rigid Design Noise Free actual front end outer dimensions are approximately 16 5 8" width X 22 5 8" height + Product Details Size 6"w X 28"h is the size for the duct opening measurement only