24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" + Product Details Heavy-Duty Steel

+ Product Details Heavy-Duty Steel Construction - Made from 20-gauge steel for superior strength and durability

actual front end outer dimensions are approximately 32 5/8" width X 26 5/8" height

actual front end outer dimensions are approximately 36 5/8" width X 16 5/8" height

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This aluminum adjustable louvered garage vent allows air ventilation and circulation in your garage 24 hours a day

24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" + Product Details Heavy-Duty Steel+ Product Details Size 24" x 36" or 36" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" X 37. 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