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"] 6in diameter Actual Filter Size – 24

Actual Filter Size – 24 3/4"w x 19 3/4" x 1"

actual front end outer dimensions are approximately 11

+ Product Description Upgrade your HVAC system with our 8" Round Air Vent Supply Grille

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 28" OR 28" x 30" duct opening (measured at the opening)

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"] 6in diameter Actual Filter Size – 24+ 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