6" x 16" or 16" x 6" Cube Core Eggcrate Return Air Grille 2-Way + Product Details Size –

+ Product Details Size – 10" X 4" is the size for the duct opening (floor/vent hole) measurement only

2" X 10" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

See chart below:

Tough reinforced metallized polyester jacket - tear and puncture resistant

6" x 16" or 16" x 6" Cube Core Eggcrate Return Air Grille 2-Way + Product Details Size –+ Product Details Size 6" x 16" or 16" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 8. 5" X 18. 5". 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