6"w X 6"h Extruded Aluminum Adjustable Core Supply Ceiling HVAC Air Grille – Interchangeable: 1-Way, 2-Way, 3-Way or 4-Way - Vent Duct Cover [Outer Dimensions: 7.125" X 7.125"] RG66 Black-HP + Product Details Size –

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

Elevate your space's aesthetic with a luxurious touch that complements any architectural style

+ Product Details Size - 18"w X 36"h X 2"d (for duct opening measurement only)

Actual Filter Size – 33 3/4"w x 15 3/4" x 1"

+ Product Details Size - 18"w X 30"h X 2"d (for duct opening measurement only)

6"w X 6"h Extruded Aluminum Adjustable Core Supply Ceiling HVAC Air Grille – Interchangeable: 1-Way, 2-Way, 3-Way or 4-Way - Vent Duct Cover [Outer Dimensions: 7.125" X 7.125"] RG66 Black-HP + Product Details Size –+ Product Details Size 6"w X 6"h Is The Size For The Duct Opening Only, Dimensions With Outer End are 7. 125" X 7. 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 a