10" x 10" Cube Core Eggcrate Return Air Grille Insulated Line this flex duct decreases the

this flex duct decreases the pressure loss and provides a more hygienic environment

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Every grille has a front end frame that will overlap at the wall joint

10" x 10" Cube Core Eggcrate Return Air Grille Insulated Line this flex duct decreases the+ Product Details Size 10" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 11. 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 electric