14" x 36" or 36" x 14" Cube Core Eggcrate Return Air Grille Filter Grille Overall Size:

Overall Size:

+ Product Details Size – 26" x 26" is the size for the duct opening measurement only

We pride ourselves on offering top-of-the-line products that meet the highest standards

actual front end outer dimensions are 6" diameter

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14" x 36" or 36" x 14" Cube Core Eggcrate Return Air Grille Filter Grille Overall Size:+ Product Details Size 14" x 36" or 36" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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