12" x 22" or 22" x 12" Cube Core Eggcrate Return Air Grille Color_Red Oak Airflow Control – Adjustable airflow

Airflow Control – Adjustable airflow lever allows precise control over the direction and volume of air

+ Product Details Size – 26"w X 36"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 24 5/8" height

+ Product Details Size – 20"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 12" x 26" or 26" x 12" is the size for the duct opening measurement only

12" x 22" or 22" x 12" Cube Core Eggcrate Return Air Grille Color_Red Oak Airflow Control – Adjustable airflow+ Product Details Size 12" x 22" or 22" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 23. 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