12" x 16" or 16" x 12" Cube Core Eggcrate Return Air Grille Powder-Coated Actual Filter Size – 27

Actual Filter Size – 27 3/4"w x 25 3/4" x 1"

actual front end outer dimensions are 32" width X 10" height

The premium durable material guarantees that they will never rust or wear through

How to Measure Your Vent Hole Before Ordering a Grille

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 6" or 6" x 12" duct opening (measured at the opening)

12" x 16" or 16" x 12" Cube Core Eggcrate Return Air Grille Powder-Coated Actual Filter Size – 27+ Product Details Size 12" x 16" or 16" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 17. 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