10" x 14" or 14" x 10" Cube Core Eggcrate Return Air Grille Return Grille + Product Details Size –

+ Product Details Size – 24"w X 24"h is the size for the duct opening measurement only

R Value Rating of Insulation - R3

+ Product Details Size – 30"w X 10"h is the size for the duct opening measurement only

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10" x 14" or 14" x 10" Cube Core Eggcrate Return Air Grille Return Grille + Product Details Size –+ Product Details Size 10" x 14" or 14" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 15. 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