12"w X 12"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: 13.125" X 13.125"] 14" Diameter + Product Details Size -

+ Product Details Size - 34"w X 12"h X 2"d (for duct opening measurement only)

+ Product Details Size - 28"w X 22"h X 2"d (for duct opening measurement only)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 4" duct openings

+ Product Details Size - 10"w X 20"h X 2"d (for duct opening measurement only)

If you are looking to enhance your project with a top-of-the-line unit

12"w X 12"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: 13.125" X 13.125"] 14" Diameter + Product Details Size -+ Product Details Size 12"w X 12"h Is The Size For The Duct Opening Only, Dimensions With Outer End are 13. 125" X 13. 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