6" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum actual front end outer dimensions

actual front end outer dimensions are approximately 37

Measure the size of the air duct/drywall opening

+ Product Details Size - 12"w X 12"h is the size for the duct opening measurement only

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+ Product Details Size – 4"w X 10"h or 10"w X 4"h is the size for the duct opening measurement only

6" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum actual front end outer dimensions+ Product Details Size 6" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" X 7. 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 bills and