6" x 8" or 8" x 6" Cube Core Eggcrate Return Air Grille 6in diameter + Product Details Size –

+ Product Details Size – 32"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 18"w X 32"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 8" duct openings

10"w X 8"h Is The Size For The Duct Opening Measurement Only

Great emphasis has been invested in the design of this product to prevent it from kinking in sharp bends & turns and to hold steady and at full diameter in all applications

6" x 8" or 8" x 6" Cube Core Eggcrate Return Air Grille 6in diameter + Product Details Size –+ Product Details Size 6" x 8" or 8" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 9. 75" height. High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%,