8" x 12" or 12" x 8" Cube Core Eggcrate Return Air Grille steel accordion-content')

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85" width X 5

this HVAC vent duct cover ensures durability and reliability

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

8" x 12" or 12" x 8" Cube Core Eggcrate Return Air Grille steel accordion-content')+ Product Details Size 8" x 12" or 12" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 13. 75". 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%, reducing