16"w X 16"h Extruded Aluminum Adjustable Core Mount Supply Ceiling HVAC Air Grille – Interchangeable: 1-Way, 2-Way, 3-Way or 4-Way - Vent Duct Cover [Outer Dimensions: 17.125" X 17.125"] Aluminum Adjustable Curved Blade + Product Details Size -

+ Product Details Size - 14"w X 6"h Is The Size For The Duct Opening Measurement Only

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this diffuser is both functional and aesthetically pleasing

75"H – fits a 18" X 6" duct opening

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16"w X 16"h Extruded Aluminum Adjustable Core Mount Supply Ceiling HVAC Air Grille – Interchangeable: 1-Way, 2-Way, 3-Way or 4-Way - Vent Duct Cover [Outer Dimensions: 17.125" X 17.125"] Aluminum Adjustable Curved Blade + Product Details Size -+ Product Details Size 16"w X 16"h Is The Size For The Duct Opening Only, Dimensions With Outer End are 17. 125" X 17. 125". Design Re configurable Interchangeable Sections Easily convertible into 1 Way, 2 Way, 3 Way, or 4 Way Just lift sections and rotate to re configure direction. High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant, beautiful, and smooth surface, adds