10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Grille Insulated Line creating a quiet and efficient

creating a quiet and efficient environment

3/8" - 4223 PSI

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85" width X 9

10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Grille Insulated Line creating a quiet and efficient+ Product Details Size 10" x 30" or 30" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 31. 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